Properties of the Number 18946

Eighteen Thousand Nine Hundred Forty-Six

Basics

Value: 18945 → 18946 → 18947

Parity: even

Prime: No

Previous Prime: 18919

Next Prime: 18947

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 9473

Divisors: 1, 2, 9473, 18946

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100101000000010

Octal: 45002

Duodecimal: AB6A

Hexadecimal: 4a02

Square: 358950916

Square Root: 137.64446955835166

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

Maximal value of sum(p(i)p(i+1),i=1..n), where p(n+1)=p(1), as p ranges over all permutations of {1,2,...,n}. A110610

Triangle read by rows: T(m,n) is the label of the ending square of an (m,n)-leaper (a generalization of a chess knight) when it can no longer move, starting on a board with squares spirally numbered, starting at 1; 1 <= n < m. Each move is to the lowest-numbered unvisited square. A323750

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 221", based on the 5-celled von Neumann neighborhood. A270936

Numbers whose base-4 representation contains exactly four 0's and three 2's. A45060

Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AEL = AlPO4-11 [Al20P20O80] starting with a T2 atom. A18946