320163618 has 32 divisors (see below), whose sum is σ = 689497920. Its totient is φ = 98739200.

The previous prime is 320163617. The next prime is 320163643. The reversal of 320163618 is 816361023.

It is not an unprimeable number, because it can be changed into a prime (320163617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20583 + ... + 32618.

It is an arithmetic number, because the mean of its divisors is an integer number (21546810).

Almost surely, 2^320163618 is an apocalyptic number.

320163618 is an abundant number, since it is smaller than the sum of its proper divisors (369334302).

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

320163618 is a wasteful number, since it uses less digits than its factorization.

320163618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53282.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 320163618 is about 17893.1164976926. The cubic root of 320163618 is about 684.1069349928.

The spelling of 320163618 in words is "three hundred twenty million, one hundred sixty-three thousand, six hundred eighteen".