918618 has 16 divisors (see below), whose sum is σ = 1847136. Its totient is φ = 304560.

The previous prime is 918613. The next prime is 918641. The reversal of 918618 is 816819.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 918618.

It is not an unprimeable number, because it can be changed into a prime (918613) by changing a digit.

918618 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1428 + ... + 1968.

It is an arithmetic number, because the mean of its divisors is an integer number (115446).

2⁹¹⁸⁶¹⁸ is an apocalyptic number.

918618 is an abundant number, since it is smaller than the sum of its proper divisors (928518).

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

918618 is a wasteful number, since it uses less digits than its factorization.

918618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829.

The product of its digits is 3456, while the sum is 33.

The square root of 918618 is about 958.4456166106. The cubic root of 918618 is about 97.2101582975.

The spelling of 918618 in words is "nine hundred eighteen thousand, six hundred eighteen".