Properties of the Number -1894

Eight Hundred Ninety-Four

Basics

Value: -1895 → -1894 → -1893

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 × 947

Divisors: 1, 2, 947, 1894

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -11101100110

Octal: -3546

Duodecimal: -111A

Hexadecimal: -766

Square: 3587236

Square Root: 43.520110293977886

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

Write 2·x/(1-x) in the form ∑_j>=1 ((1-x^j)^a(j) - 1). A290973

∏_n>=1 1 / (1 - xⁿ)^a(n/n!) = 1 + log(1 + x). A352691

sech(tan(x)+arcsin(x))=1-4/2!*x²+56/4!*x⁴-1894/6!*x⁶+120872/8!*x⁸... A12959

G.f.: ∏_j>=1 ∏_i>=1 (1 + x^i·j). A107742

a(n) = n² + n + 2. A14206

The number of n-full sets, F(n). A188431

Number of integer partitions of n whose distinct parts are pairwise indivisible. A305148

Compound filter: a(n) = T(A001511(n), A046523(n)), where T(n,k) is sequence A000027 used as a pairing function. A286161

Positions of occurrences of the natural numbers as a second subsequence in A100035. A100037

Expansion of x*(1+x+x²) / ( (x-1)*(x³+x²-1) ). A171861