Properties of the Number 18309

Eighteen Thousand Three Hundred Nine

Basics

Value: 18308 → 18309 → 18310

Parity: odd

Prime: No

Previous Prime: 18307

Next Prime: 18311

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 17 × 359

Divisors: 1, 3, 17, 51, 359, 1077, 6103, 18309

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100011110000101

Octal: 43605

Duodecimal: A719

Hexadecimal: 4785

Square: 335219481

Square Root: 135.31075345293144

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

Number of complete partitions of n. A126796

Growth series for affine Coxeter group B₄. A267167

Place n equally spaced points around the circumference of a circle and then, for each pair of points, draw two distinct circles, whose radii are the same as the first circle, such that both points lie on their circumferences. The sequence gives the total number of (curved) edges formed. A371375

a(n) = (4·n³ + 12·n² - 4·n + 3)/3. A322594

Numbers k such that 4k+1 is a palindromic prime. A192261

Index of first occurrence of n in A364197. A364198

Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1101-0111-0010 pattern in any orientation. A147240

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 0), (0, -1, 1), (0, 1, -1), (1, 1, 1)}. A149615

Number of walks within N² (the first quadrant of Z²) starting at (0,0), ending on the vertical axis and consisting of n steps taken from {(-1, -1), (-1, 0), (-1, 1), (0, 1), (1, 0)}. A151421

Number of permutations of 1..n containing the relative rank sequence { 352614 } at any spacing. A159174