318506605813 has 16 divisors (see below), whose sum is σ = 348223075200. Its totient is φ = 288917729280.

The previous prime is 318506605801. The next prime is 318506605817.

318506605813 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318506605813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318506605817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9516853 + ... + 9550261.

It is an arithmetic number, because the mean of its divisors is an integer number (21763942200).

Almost surely, 2^318506605813 is an apocalyptic number.

It is an amenable number.

318506605813 is a deficient number, since it is larger than the sum of its proper divisors (29716469387).

318506605813 is a wasteful number, since it uses less digits than its factorization.

318506605813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35292.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 318506605813 in words is "three hundred eighteen billion, five hundred six million, six hundred five thousand, eight hundred thirteen".