Properties of the Number -1946

Nine Hundred Forty-Six

Basics

Value: -1947 → -1946 → -1945

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 × 139

Divisors: 1, 2, 7, 14, 139, 278, 973, 1946

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11110011010

Octal: -3632

Duodecimal: -1162

Hexadecimal: -79a

Square: 3786916

Square Root: 44.11349000022555

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) = A353750(n) - A353749(n). A353757

Triangle, read by rows of n² terms, where row n equals the coefficients in the series reversion of the function G(y,n)-1 such that: y = ∑_m>=1 1/G(y,n)^2·n*m * ∏_k=1..m (1 - 1/G(y,n)^2·k-1). A214690

Expansion of f(-q², -q⁵)³ / (f(-q¹, -q⁶) * f(-q³, -q⁴)²) in powers of q where f(, ) is Ramanujan's general θ function. A262933

Expansion of q·f(-q¹, -q⁶)³ / f(-q², -q⁵)² * f(-q³, -q⁴) in powers of q where f() is Ramanujan's two-variable θ function. A305443

Expansion of (1/(1 + x)) * ∑_k>=1 k·x^k/(x^k + (1 + x)^k). A320589

Convolution square of A112274. A285355

a(n) = 6·n² + 2 for n > 0, a(0)=1. A5897

Number of balanced partitions of n: the largest part equals the number of parts. A47993

a(n) = (2·n-1)*(5·n²-5·n+6)/6. A63489

Coordination sequence for 3D uniform tiling formed by stacking parallel layers of the 4.8.8 2D tiling (cf. A008576). A299259