313949618 has 16 divisors (see below), whose sum is σ = 476756280. Its totient is φ = 155037696.

The previous prime is 313949599. The next prime is 313949639. The reversal of 313949618 is 816949313.

It can be written as a sum of positive squares in 4 ways, for example, as 312688489 + 1261129 = 17683^2 + 1123^2 .

It is an unprimeable number.

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, 113678 + ... + 116406.

Almost surely, 2^313949618 is an apocalyptic number.

313949618 is a deficient number, since it is larger than the sum of its proper divisors (162806662).

313949618 is a wasteful number, since it uses less digits than its factorization.

313949618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421.

The product of its digits is 139968, while the sum is 44.

The square root of 313949618 is about 17718.6234792661. The cubic root of 313949618 is about 679.6520841331.

The spelling of 313949618 in words is "three hundred thirteen million, nine hundred forty-nine thousand, six hundred eighteen".