Properties of the Number 1906

One Thousand Nine Hundred Six

Basics

Value: 1905 → 1906 → 1907

Parity: even

Prime: No

Previous Prime: 1901

Next Prime: 1907

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 953

Divisors: 1, 2, 953, 1906

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 11101110010

Octal: 3562

Duodecimal: 112A

Hexadecimal: 772

Square: 3632836

Square Root: 43.657759905886145

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

Numbers n such that n³² + 1 is prime. A6315

Numbers that are the sum of 9 positive 6th powers. A3365

Number of partitions of 4n into 4 parts. A238340

Semiprimes of form prime - 1. A77065

Partial sums of the squarefree numbers, A005117. A173143

Numbers k such that 3^k - 8 is prime. A217135

T(n,k)=Number of nXk 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A281205

Numbers k such that numerator(Bernoulli(2·k)/(2·k)) is different from numerator(Bernoulli(2·k)/(2·k*(2·k-1))). A90495

The first of three consecutive integers the sum of which is equal to the sum of three consecutive prime numbers. A298073

Number of integer partitions of n such that the maximum is less than twice the median. A361858