12518919 has 24 divisors (see below), whose sum is σ = 21883680. Its totient is φ = 6732288.

The previous prime is 12518903. The next prime is 12518921. The reversal of 12518919 is 91981521.

12518919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12518919 - 2⁴ = 12518903 is a prime.

It is a super-2 number, since 2×12518919² = 313446665857122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12518939) 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, 4774 + ... + 6915.

It is an arithmetic number, because the mean of its divisors is an integer number (911820).

Almost surely, 2^12518919 is an apocalyptic number.

12518919 is a deficient number, since it is larger than the sum of its proper divisors (9364761).

12518919 is a wasteful number, since it uses less digits than its factorization.

12518919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11719 (or 11716 counting only the distinct ones).

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

The square root of 12518919 is about 3538.2084449619. The cubic root of 12518919 is about 232.1964682853.

It can be divided in two parts, 125 and 18919, that added together give a square (19044 = 138²).

The spelling of 12518919 in words is "twelve million, five hundred eighteen thousand, nine hundred nineteen".