Properties of the Number 918

Nine Hundred Eighteen

Basics

Value: 917 → 918 → 919

Parity: even

Prime: No

Previous Prime: 911

Next Prime: 919

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 × 3 ³ × 17

Divisors: 1, 2, 3, 6, 9, 17, 18, 27, 34, 51

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110010110

Octal: 1626

Duodecimal: 646

Hexadecimal: 396

Square: 842724

Square Root: 30.298514815086232

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Toothpick sequence starting at the outside corner of an infinite square from which protrudes a half toothpick. A153006

Numbers k such that k⁸ + 1 is prime. A6314

Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is Euler transform of (j->k). A144064

6 times triangular numbers: a(n) = 3·n*(n+1). A28896

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2), where a(0) = 1, a(1) = 2, b(0) = 3. A294532

Multiples of 9 containing a 9 in their decimal representation. A121029

Multiples of 18 containing a 18 in their decimal representation. A121038

Numbers whose negated unsorted prime signature is not unimodal. A332642

Numbers whose sum of digits is 18. A235228

Triangular array T read by rows: T(n,0)=T(n,n)=1 for n >= 0; for n >= 2 and 1 <= k <= n-1, T(n,k) = T(n-1,k-1) + T(n-2,k-1) + T(n-1,k) if n is odd and 1 <= k <= (n-1)/2, else T(n,k) = T(n-1,k-1) + T(n-1,k). A26758