1195
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1440
- Proper Divisor Sum (Aliquot Sum)
- 245
- 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
- 952
- Möbius Function
- 1
- Radical
- 1195
- 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
- no
- Odd
- yes
Appears in sequences
- Number of n-step spiral self-avoiding walks on hexagonal lattice, where at each step one may continue in same direction or make turn of 2*Pi/3 counterclockwise.at n=22A000511
- Primes multiplied by 5.at n=51A001750
- a(n) = ceiling(n*phi^11), where phi is the golden ratio, A001622.at n=6A004966
- Positions of remoteness 3 in Beans-Don't-Talk.at n=20A005695
- Coordination sequence T6 for Zeolite Code MFI.at n=22A008169
- Coordination sequence T2 for Zeolite Code -CLO.at n=31A009851
- Coordination sequence T4 for Zeolite Code -CLO.at n=30A009853
- E.g.f. -log(sech(x) - log(x+1)).at n=7A013558
- Coordination sequence T1 for Zeolite Code SAO.at n=27A019571
- Numbers k such that the continued fraction for sqrt(k) has period 20.at n=24A020359
- Index of 3^n within sequence of numbers of form 2^i*3^j (A003586).at n=38A022330
- a(n) = a(n-1) + c(n-1) for n >= 2, a( ) increasing, given a(1)=6; where c( ) is complement of a( ).at n=43A022938
- Numbers k such that Fibonacci(k) == 5 (mod k).at n=40A023176
- a(n) = (1/1 + 1/(n-1) + ... + 1/C(n-[ n/2 ],[ n/2 ]))*L, where L = LCM{1, n-1, ..., C(n-[ n/2 ],[ n/2 ])}.at n=9A025563
- Index of 10^n within the sequence of the numbers of the form 5^i*10^j.at n=40A025743
- Index of 10^n within the sequence of the numbers of the form 7^i*10^j.at n=44A025745
- a(n) = n^2 + n + 5.at n=34A027690
- 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 12.at n=39A031510
- "CGK" (necklace, element, unlabeled) transform of 2,2,2,2,...at n=12A032156
- Closest integer to (Pi/4)*n^2.at n=38A033551