Properties of the Number -1836

Eight Hundred Thirty-Six

Basics

Value: -1837 → -1836 → -1835

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ³ × 17

Divisors: 1, 2, 3, 4, 6, 9, 12, 17, 18, 27

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -11100101100

Octal: -3454

Duodecimal: -1090

Hexadecimal: -72c

Square: 3370896

Square Root: 42.8485705712571

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

Expansion of q * χ(-q) / χ(-q⁵)⁵ in powers of q where χ() is a Ramanujan θ function. A95813

Expansion of f(q, q³)² / (f(q, q⁴) * f(q², q³)) in powers of q where f(, ) is the Ramanujan general θ function. A138522

Expansion of g.f.: (-1 + sqrt(1+12·x+48·x²)) / (6·x). A240880

Expansion of u1 * (u1 + u4) * (u1² - 2·u1·u4 - u4²) / η(q²)⁴ in powers of q where u1 = η(q)⁸ and u4 = 32 * η(q⁴)⁸. A226010

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 195", based on the 5-celled von Neumann neighborhood. A270692

(1/18)*Difference between concatenation of n and n² and concatenation of n² and n. A55435

Expansion of (1-x)/(1+2·x+2·x²-x³). A78068

a(n) = n*σ(n). A64987

Skew Fibonacci-Pascal triangle read by rows. A37027

Convolved Fibonacci numbers. A1628