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Properties of the Number 19613

Nineteen Thousand Six Hundred Thirteen

Basics

Value: 19612 → 19613 → 19614

Parity: odd

Prime: No

Previous Prime: 19609

Next Prime: 19661

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 11 × 1783

Divisors: 1, 11, 1783, 19613

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100110010011101

Octal: 46235

Duodecimal: B425

Hexadecimal: 4c9d

Square: 384669769

Square Root: 140.04642087536547

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) = 4 + floor(∑k=1..n-1 a(k) / 2). A120134
Number of partitions of n such that each part is no more than 3 more than the sum of all smaller parts. A286929
Numbers k such that k5*2k + 1 is a prime. A367421
Number of nondecreasing Dyck paths of semilength n and having no peaks at even level (n>=0). A nondecreasing Dyck path is a Dyck path for which the sequence of the altitudes of the valleys is nondecreasing. A121485
Greedy Coppersmith-Winograd sequence. A172161
The least semiprime (A001358) such that between it and the next n semiprimes, but not the next n+1 semiprimes, there are no primes. A228170
T(n,n-1), array T as in A047130. A47133
T(n,n-2), array T as in A047130. A47134
Number of positions that are exactly n moves from the starting position in the Bicube or Bandaged Rubik's Cube puzzle. A79771
Minimal peaks in digital expansions of π: positions of peaks equal to 1. A105275