18342618 has 16 divisors (see below), whose sum is σ = 41926080. Its totient is φ = 5240736.

The previous prime is 18342601. The next prime is 18342631. The reversal of 18342618 is 81624381.

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, 218323 + ... + 218406.

It is an arithmetic number, because the mean of its divisors is an integer number (2620380).

Almost surely, 2^18342618 is an apocalyptic number.

18342618 is an abundant number, since it is smaller than the sum of its proper divisors (23583462).

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

18342618 is a wasteful number, since it uses less digits than its factorization.

18342618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436741.

The product of its digits is 9216, while the sum is 33.

The square root of 18342618 is about 4282.8282711311. The cubic root of 18342618 is about 263.7265016538.

Adding to 18342618 its reverse (81624381), we get a palindrome (99966999).

The spelling of 18342618 in words is "eighteen million, three hundred forty-two thousand, six hundred eighteen".