318129713618 has 8 divisors (see below), whose sum is σ = 477267145212. Its totient is φ = 159040665216.

The previous prime is 318129713611. The next prime is 318129713651. The reversal of 318129713618 is 816317921813.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 277494007729 + 40635705889 = 526777^2 + 201583^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (318129713611) 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 3 ways as a sum of consecutive naturals, for example, 12079355 + ... + 12105662.

Almost surely, 2^318129713618 is an apocalyptic number.

318129713618 is a deficient number, since it is larger than the sum of its proper divisors (159137431594).

318129713618 is a wasteful number, since it uses less digits than its factorization.

318129713618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24191596.

The product of its digits is 435456, while the sum is 50.

The spelling of 318129713618 in words is "three hundred eighteen billion, one hundred twenty-nine million, seven hundred thirteen thousand, six hundred eighteen".