318312188618 has 16 divisors (see below), whose sum is σ = 477932495040. Its totient is φ = 159001411200.

The previous prime is 318312188617. The next prime is 318312188641. The reversal of 318312188618 is 816881213813.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (318312188617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16163738 + ... + 16183418.

It is an arithmetic number, because the mean of its divisors is an integer number (29870780940).

Almost surely, 2^318312188618 is an apocalyptic number.

318312188618 is a deficient number, since it is larger than the sum of its proper divisors (159620306422).

318312188618 is a wasteful number, since it uses less digits than its factorization.

318312188618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27133.

The product of its digits is 442368, while the sum is 50.

The spelling of 318312188618 in words is "three hundred eighteen billion, three hundred twelve million, one hundred eighty-eight thousand, six hundred eighteen".