12951918 has 24 divisors (see below), whose sum is σ = 32071728. Its totient is φ = 3700512.

The previous prime is 12951907. The next prime is 12951929. The reversal of 12951918 is 81915921.

12951918 is a `hidden beast` number, since 129 + 519 + 18 = 666.

12951918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12951907) and next prime (12951929).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51271 + ... + 51522.

It is an arithmetic number, because the mean of its divisors is an integer number (1336322).

Almost surely, 2^12951918 is an apocalyptic number.

12951918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12951918 is an abundant number, since it is smaller than the sum of its proper divisors (19119810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12951918 is a wasteful number, since it uses less digits than its factorization.

12951918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102808 (or 102805 counting only the distinct ones).

The product of its digits is 6480, while the sum is 36.

The square root of 12951918 is about 3598.8773249445. The cubic root of 12951918 is about 234.8432212177.

The spelling of 12951918 in words is "twelve million, nine hundred fifty-one thousand, nine hundred eighteen".