1418
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 2130
- Proper Divisor Sum (Aliquot Sum)
- 712
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 708
- Möbius Function
- 1
- Radical
- 1418
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 34
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- A self-generating sequence: a(1)=1, a(2)=2, a(n+1) chosen so that a(n+1)-a(n-1) is the first number not obtainable as a(j)-a(i) for 1<=i<j<=n.at n=42A001149
- Numbers k such that phi(2k-1) < phi(2k), where phi is Euler's totient function A000010.at n=20A001836
- Number of strict first-order maximal independent sets in path graph.at n=25A007383
- Coordination sequence T2 for Zeolite Code FER.at n=23A008107
- Coordination sequence T1 for Zeolite Code LEV.at n=28A008127
- Coordination sequence T1 for Zeolite Code MAZ.at n=26A008144
- Numbers k such that the continued fraction for sqrt(k) has period 9.at n=13A010339
- a(n) = floor( n*(n-1)*(n-2)/11 ).at n=26A011893
- Powers of fourth root of 14 rounded down.at n=11A018084
- Define the sequence S(a(0),a(1)) by a(n+2) is the least integer such that a(n+2)/a(n+1) > a(n+1)/a(n) for n >= 0. This is S(1,6).at n=4A018904
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MFI = ZSM-5 Nan[AlnSi96-nO192] starting with a T10 atom.at n=10A019169
- a(n) = [ (2nd elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ], where S(n) = {first n+1 positive integers congruent to 2 mod 3}.at n=43A024398
- [ (4th elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ], where S(n) = {first n+3 positive integers congruent to 2 mod 3}.at n=2A024400
- Coordination sequence T3 for Zeolite Code MWW.at n=25A024988
- a(n) = [ Sum{(log(j)-log(i))^3} ], 2 <= i < j <= n.at n=36A025207
- Numbers that are the sum of 3 distinct nonzero squares in exactly 8 ways.at n=40A025346
- Twin lucky numbers (middle terms).at n=43A031160
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 10.at n=1A031423
- Numbers that, when expressed in base 4 and then interpreted in base 10, yield a multiple of the original number.at n=14A032540
- Concatenation of n and n + 4 or {n,n+4}.at n=13A032609