318449944813 has 32 divisors (see below), whose sum is σ = 427619469312. Its totient is φ = 229027953600.

The previous prime is 318449944751. The next prime is 318449944819.

318449944813 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 318449944813 - 2¹⁷ = 318449813741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318449944819) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13043848 + ... + 13068238.

It is an arithmetic number, because the mean of its divisors is an integer number (13363108416).

Almost surely, 2^318449944813 is an apocalyptic number.

It is an amenable number.

318449944813 is a deficient number, since it is larger than the sum of its proper divisors (109169524499).

318449944813 is a wasteful number, since it uses less digits than its factorization.

318449944813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37465.

The product of its digits is 11943936, while the sum is 58.

The spelling of 318449944813 in words is "three hundred eighteen billion, four hundred forty-nine million, nine hundred forty-four thousand, eight hundred thirteen".