1198
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1800
- Proper Divisor Sum (Aliquot Sum)
- 602
- 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
- 598
- Möbius Function
- 1
- Radical
- 1198
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 119
- 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
- Number of n-node rooted trees of height 4.at n=11A000299
- Absolute value of Glaisher's beta'(2n+1).at n=27A002291
- Related to representation as sums of squares.at n=8A002292
- a(n) = a(n-1) + a(n-8), with a(i) = 1 for i = 0..7.at n=38A005710
- Numbers n such that n^32 + 1 is prime.at n=25A006315
- Coordination sequence T5 for Zeolite Code AET.at n=24A008011
- Coordination sequence T2 for Zeolite Code EPI.at n=22A008091
- Coordination sequence T3 for Zeolite Code EPI.at n=22A008092
- Coordination sequence T1 for Zeolite Code LTL.at n=25A008138
- Molien series for A_4.at n=42A008627
- Numbers k such that phi(k) + 4 | sigma(k + 4).at n=44A015783
- Numbers k such that phi(k + 4) | sigma(k) for k not congruent to 0 (mod 3).at n=49A015847
- Expansion of 1/(1 - x^8 - x^9 - ...).at n=46A017902
- Numbers k such that the continued fraction for sqrt(k) has period 44.at n=5A020383
- a(n) = a(n-1) + a(n-2) + 1, with a(0)=3, a(1)=10.at n=11A022409
- Expansion of Product_{m >= 1} (1 + q^m)^(-2).at n=38A022597
- Place where n-th 1 occurs in A023117.at n=32A022779
- Place where n-th 1 occurs in A023123.at n=29A022785
- a(n) = 1*prime(n) + 2*prime(n-1) + ... + k*prime(n+1-k), where k=floor((n+1)/2) and prime(n) is the n-th prime.at n=15A023870
- [ (3rd elementary symmetric function of S(n))/(2nd elementary symmetric function of S(n)) ], where S(n) = {first n+2 positive integers congruent to 1 mod 4}.at n=40A024388