13218994 has 16 divisors (see below), whose sum is σ = 20176128. Its totient is φ = 6494832.

The previous prime is 13218977. The next prime is 13219061. The reversal of 13218994 is 49981231.

13218994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47584 + ... + 47860.

It is an arithmetic number, because the mean of its divisors is an integer number (1261008).

Almost surely, 2^13218994 is an apocalyptic number.

13218994 is a deficient number, since it is larger than the sum of its proper divisors (6957134).

13218994 is a wasteful number, since it uses less digits than its factorization.

13218994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609.

The product of its digits is 15552, while the sum is 37.

The square root of 13218994 is about 3635.7934484786. The cubic root of 13218994 is about 236.4464521259.

The spelling of 13218994 in words is "thirteen million, two hundred eighteen thousand, nine hundred ninety-four".