12519918 has 24 divisors (see below), whose sum is σ = 27588600. Its totient is φ = 4102224.

The previous prime is 12519911. The next prime is 12519919. The reversal of 12519918 is 81991521.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12519911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4833 + ... + 6956.

It is an arithmetic number, because the mean of its divisors is an integer number (1149525).

Almost surely, 2^12519918 is an apocalyptic number.

12519918 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12519918 is an abundant number, since it is smaller than the sum of its proper divisors (15068682).

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

12519918 is a wasteful number, since it uses less digits than its factorization.

12519918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11856 (or 11853 counting only the distinct ones).

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

The square root of 12519918 is about 3538.3496152868. The cubic root of 12519918 is about 232.2026444869.

The spelling of 12519918 in words is "twelve million, five hundred nineteen thousand, nine hundred eighteen".