13398618 has 24 divisors (see below), whose sum is σ = 28469952. Its totient is φ = 4202944.

The previous prime is 13398617. The next prime is 13398641. The reversal of 13398618 is 81689331.

13398618 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (13398611) 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, 2130 + ... + 5597.

It is an arithmetic number, because the mean of its divisors is an integer number (1186248).

Almost surely, 2^13398618 is an apocalyptic number.

13398618 is an abundant number, since it is smaller than the sum of its proper divisors (15071334).

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

13398618 is a wasteful number, since it uses less digits than its factorization.

13398618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7766 (or 7749 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 13398618 is about 3660.4122718623. The cubic root of 13398618 is about 237.5126080103.

The spelling of 13398618 in words is "thirteen million, three hundred ninety-eight thousand, six hundred eighteen".