1108
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 1946
- Proper Divisor Sum (Aliquot Sum)
- 838
- 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
- 552
- Möbius Function
- 0
- Radical
- 554
- Omega Function (Ω)
- 3
- 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
- 18
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Moser-de Bruijn sequence: sums of distinct powers of 4.at n=46A000695
- Primes multiplied by 4.at n=58A001749
- Expansion of (1 + x - x^5) / (1 - x)^3.at n=42A004120
- Numbers k such that k^64 + 1 is prime.at n=11A006316
- Coordination sequence T5 for Zeolite Code VET.at n=19A009906
- Sum of (Gaussian) q-binomial coefficients for q=-24.at n=3A015193
- Sum of Gaussian binomial coefficients for q=23.at n=3A015215
- Phi(n) + 6 | sigma(n + 6).at n=46A015785
- Number of lines through exactly 4 points of an n X n grid of points.at n=19A018811
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite LOS = Losod Na12[Al12Si12O48].18H2O starting with a T1 atom.at n=4A019032
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RON = Roggianite Ca16[Be8Al16Si32O104(OH)16].19H2O starting with a T1 atom.at n=11A019217
- Numbers k such that the continued fraction for sqrt(k) has period 38.at n=5A020377
- a(n)-th prime is sum of first k primes for some k.at n=7A020641
- Least k such that b(k) = n, where b( ) is sequence A020944.at n=54A020948
- Number of 9's in all partitions of n.at n=30A024793
- s(n+3)/4, where s is A024959.at n=8A024960
- Numbers that are the sum of 4 distinct nonzero squares in exactly 10 ways.at n=40A025385
- Index of 4^n within the sequence of the numbers of the form 3^i*4^j.at n=41A025701
- a(n) = T(2n,n+3), T given by A026725.at n=4A026843
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 16.at n=21A031514