918612618 has 32 divisors (see below), whose sum is σ = 2290567680. Its totient is φ = 238600560.

The previous prime is 918612599. The next prime is 918612647. The reversal of 918612618 is 816216819.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 918612618.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993708 + ... + 994631.

It is an arithmetic number, because the mean of its divisors is an integer number (71580240).

Almost surely, 2^918612618 is an apocalyptic number.

918612618 is an abundant number, since it is smaller than the sum of its proper divisors (1371955062).

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

918612618 is a wasteful number, since it uses less digits than its factorization.

918612618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988362.

The product of its digits is 41472, while the sum is 42.

The square root of 918612618 is about 30308.6228324548. The cubic root of 918612618 is about 972.0996845214.

The spelling of 918612618 in words is "nine hundred eighteen million, six hundred twelve thousand, six hundred eighteen".