1943
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 2040
- Proper Divisor Sum (Aliquot Sum)
- 97
- 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
- 1848
- Möbius Function
- 1
- Radical
- 1943
- 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
- 37
- 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
- no
- Odd
- yes
Appears in sequences
- Number of free nonplanar polyenoids with n nodes.at n=5A000953
- Numbers k such that phi(2k-1) < phi(2k), where phi is Euler's totient function A000010.at n=26A001836
- Number of partitions of floor(5n/2)-1 into n nonnegative integers each no more than 5.at n=22A001976
- Number of bipartite partitions.at n=11A002766
- Largest number not the sum of distinct n-th-order polygonal numbers.at n=11A007419
- Coordination sequence T1 for Zeolite Code MON.at n=27A008181
- Coordination sequence T5 for Zeolite Code MTW.at n=29A008200
- Coordination sequence T3 for Zeolite Code NES.at n=28A008207
- a(n) = n OR n^2 (applied to ternary expansions).at n=43A008467
- Coordination sequence T5 for Zeolite Code CON.at n=31A009872
- Numbers with exactly 6 2's in their ternary expansion.at n=3A023704
- s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Lucas numbers), t = A001950 (upper Wythoff sequence).at n=13A025095
- Index of 6^n within the sequence of the numbers of the form 3^i*6^j.at n=48A025713
- a(n) = sum of the numbers between the two n's in A026342.at n=45A026345
- Number of partitions of n into an even number of parts, the least being 4; also, a(n+4) = number of partitions of n into an odd number of parts, each >=4.at n=55A027196
- Coordination sequence T1 for Zeolite Code SBT.at n=35A033612
- Multiplicity of highest weight (or singular) vectors associated with character chi_97 of Monster module.at n=34A034485
- Number of partitions of n into parts not of form 4k+2, 24k, 24k+9 or 24k-9. Also number of partitions in which no odd part is repeated, with at most 4 parts of size less than or equal to 2 and where differences between parts at distance 5 are greater than 1 when the smallest part is odd and greater than 2 when the smallest part is even.at n=36A036033
- Number of partitions of n such that cn(0,5) = cn(2,5) <= cn(1,5) <= cn(3,5) = cn(4,5).at n=60A036848
- Coordination sequence T3 for Zeolite Code SFF.at n=29A038433