Properties of the Number 18659

Eighteen Thousand Six Hundred Fifty-Nine

Basics

Value: 18658 → 18659 → 18660

Parity: odd

Prime: No

Previous Prime: 18637

Next Prime: 18661

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 47 × 397

Divisors: 1, 47, 397, 18659

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100011100011

Octal: 44343

Duodecimal: A96B

Hexadecimal: 48e3

Square: 348158281

Square Root: 136.59795020423988

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

a(n) = least k such that the remainder when 11^k is divided by k is n. A127819

Least k such that n^k mod k = n-1. A128149

a(n) = 3^n-1 - 2ⁿ. A3063

Sum of all parts minus the total numbers of parts of all partitions of n. A196087

Irregular array read by rows in which row n lists the integers k, in ascending order, for which there is a primitive cycle of n positive integers under iteration by the Collatz-like 3x+k function. A226619

Least integer N > 1 such that the number of base-n-zero containing numbers [<= N] >= the number of base-n-zerofree numbers [<= N]. A306195

Monotonic ordering of nonnegative differences 3ⁱ-4^j, for 40>= i>=0, j>=0. A192147

Constant term of the reduction by x² -> x+1 of the polynomial p(n,x) defined at Comments. A192954

MM-numbers of capturing, non-nesting multiset partitions (with empty parts allowed). A326260

Expansion of (1-x)²/((1-x)³-2x⁴). A97119