12918807 has 18 divisors (see below), whose sum is σ = 20512856. Its totient is φ = 7828920.

The previous prime is 12918779. The next prime is 12918811. The reversal of 12918807 is 70881921.

It is not a de Polignac number, because 12918807 - 2⁶ = 12918743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918887) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4843 + ... + 7020.

Almost surely, 2^12918807 is an apocalyptic number.

12918807 is a deficient number, since it is larger than the sum of its proper divisors (7594049).

12918807 is a wasteful number, since it uses less digits than its factorization.

12918807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11891 (or 11877 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 12918807 is about 3594.2741965521. The cubic root of 12918807 is about 234.6429283713.

It can be divided in two parts, 12 and 918807, that added together give a palindrome (918819).

The spelling of 12918807 in words is "twelve million, nine hundred eighteen thousand, eight hundred seven".