Properties of the Number -1368

Three Hundred Sixty-Eight

Basics

Value: -1369 → -1368 → -1367

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 19

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 18, 19

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10101011000

Octal: -2530

Duodecimal: -960

Hexadecimal: -558

Square: 1871424

Square Root: 36.98648401781386

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

Dirichlet inverse of the Jordan function J₂ (A007434). A46970

Coefficients in expansion of (E₆²/E₄³)^1/144. A296609

Triangle of Lehmer-Comtet numbers of the first kind. A8296

G.f.: ∑_n=-oo..+oo n·xⁿ * (1 - xⁿ)ⁿ. A291937

A diagonal of A008296. A45406

Expansion of g.f. (theta₃(x) - 1)/2 * ∏_n>=1 (1 - x^4·n-2) / (1 - x^4·n). A370153

∑_{d divides n} d²*(-1)^bigomega(d), where bigomega(n) = A001222(n). A76792

a(n) = 1 - n². A258837

Riordan array (1/(1-9x)^1/3, x/(9x-1)). A283150

Riordan array ((1-x²)/(1+3x+x²),x/(1+3x+x²)). A110168