12601918 has 12 divisors (see below), whose sum is σ = 21989232. Its totient is φ = 5400780.

The previous prime is 12601909. The next prime is 12601931. The reversal of 12601918 is 81910621.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64198 + ... + 64393.

It is an arithmetic number, because the mean of its divisors is an integer number (1832436).

Almost surely, 2^12601918 is an apocalyptic number.

12601918 is a deficient number, since it is larger than the sum of its proper divisors (9387314).

12601918 is a wasteful number, since it uses less digits than its factorization.

12601918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128607 (or 128600 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 12601918 is about 3549.9180272226. The cubic root of 12601918 is about 232.7084837478.

The spelling of 12601918 in words is "twelve million, six hundred one thousand, nine hundred eighteen".