118563618 has 16 divisors (see below), whose sum is σ = 237263616. Its totient is φ = 39498480.

The previous prime is 118563617. The next prime is 118563619. The reversal of 118563618 is 816365811.

It is an interprime number because it is at equal distance from previous prime (118563617) and next prime (118563619).

It is not an unprimeable number, because it can be changed into a prime (118563617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8248 + ... + 17468.

It is an arithmetic number, because the mean of its divisors is an integer number (14828976).

Almost surely, 2^118563618 is an apocalyptic number.

118563618 is an abundant number, since it is smaller than the sum of its proper divisors (118699998).

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

118563618 is a wasteful number, since it uses less digits than its factorization.

118563618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11369.

The product of its digits is 34560, while the sum is 39.

The square root of 118563618 is about 10888.6922079743. The cubic root of 118563618 is about 491.2664973838.

The spelling of 118563618 in words is "one hundred eighteen million, five hundred sixty-three thousand, six hundred eighteen".