Properties of the Number -1864

Eight Hundred Sixty-Four

Basics

Value: -1865 → -1864 → -1863

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ³ × 233

Divisors: 1, 2, 4, 8, 233, 466, 932, 1864

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -11101001000

Octal: -3510

Duodecimal: -10B4

Hexadecimal: -748

Square: 3474496

Square Root: 43.174066289845804

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

Irregular triangular array read by rows: row n shows the coefficients of this polynomial of degree n: (1/n!)*(numerator of n-th derivative of (1-x)/(x²-3x+1)). A328646

Number of twos minus number of ones in the first 2ⁿ entries of the Kolakoski sequence, A000002. A289323

Triangle T(n,k) read by rows: coefficient [x^k] of the polynomial h(n,x) with h(0,x)=1, h(1,x)=1-x and recursively h(n,x) = 1 + n -(1-x)*(1-h(n-1,x)) - n·h(n-2,x). A136247

INVERT transform of A002321, Mertens's function. A144031

a(0)=1, a(1)=4, a(n) = 12·a(n-2) - a(n-1). A165458

Expansion of 1 / ∑_k>=0 x^{k*(3·k - 2}). A363275

Expansion of (1-x)^-1/(1+2·x²+x³). A77894

Triangle read by rows, T(n, k) the coefficients of some polynomials in π, for n >= 0 and 0 <= k <= n. A295517

Number of positive subset sums of strict integer partitions of n. A284640

Number of non-isomorphic multiset partitions of weight n in which (1) all parts have the same size and (2) each vertex appears the same number of times. A319056