1118
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 11
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 1848
- Proper Divisor Sum (Aliquot Sum)
- 730
- 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
- 504
- Möbius Function
- -1
- Radical
- 1118
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 3
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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 88
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- Generalized class numbers c_(n,1).at n=21A000233
- Numbers that are not the sum of 4 tetrahedral numbers.at n=48A000797
- Describe the previous term! (method A - initial term is 8).at n=2A001151
- Numbers that are the sum of 12 positive 6th powers.at n=19A003368
- Positive even numbers that are not the sum of a pair of twin primes.at n=19A007534
- Coordination sequence T2 for Zeolite Code AEL.at n=22A008005
- Coordination sequence T1 for Zeolite Code AST.at n=24A008036
- Coordination sequence T10 for Zeolite Code EUO.at n=21A008096
- Coordination sequence T4 for Zeolite Code RUT.at n=22A009900
- Coordination sequence T5 for Zeolite Code RUT.at n=22A009901
- a(0) = 1, a(n) = 31*n^2 + 2 for n>0.at n=6A010020
- Numbers n such that phi(n + 9) | sigma(n) for n not congruent to 0 (mod 3).at n=26A015849
- Numbers with exactly 3 3's in their base-5 expansion.at n=30A023736
- a(n) = a(1)*a(n-1) + a(2)*a(n-2) + ... + a(n-3)*a(3) for n >= 4, with initial terms 1, -1, 1, 1.at n=19A025258
- Numbers that are the sum of 3 nonzero squares in exactly 9 ways.at n=15A025329
- Numbers that are the sum of 3 nonzero squares in 9 or more ways.at n=39A025337
- Numbers that are the sum of 3 distinct nonzero squares in exactly 9 ways.at n=7A025347
- Numbers that are the sum of 3 distinct nonzero squares in 8 or more ways.at n=48A025354
- Numbers that are the sum of 3 distinct nonzero squares in 9 or more ways.at n=24A025355
- Numbers that are the sum of 4 positive cubes in exactly 2 ways.at n=27A025404