12918975 has 24 divisors (see below), whose sum is σ = 21470352. Its totient is φ = 6854400.

The previous prime is 12918943. The next prime is 12918979. The reversal of 12918975 is 57981921.

12918975 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12918975 - 2⁵ = 12918943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12918979) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20769 + ... + 21381.

It is an arithmetic number, because the mean of its divisors is an integer number (894598).

Almost surely, 2^12918975 is an apocalyptic number.

12918975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12918975 is a deficient number, since it is larger than the sum of its proper divisors (8551377).

12918975 is a wasteful number, since it uses less digits than its factorization.

12918975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907 (or 902 counting only the distinct ones).

The product of its digits is 45360, while the sum is 42.

The square root of 12918975 is about 3594.2975669802. The cubic root of 12918975 is about 234.6439454890.

The spelling of 12918975 in words is "twelve million, nine hundred eighteen thousand, nine hundred seventy-five".