518965813 has 16 divisors (see below), whose sum is σ = 548352000. Its totient is φ = 490192560.

The previous prime is 518965787. The next prime is 518965819. The reversal of 518965813 is 318569815.

It is not a de Polignac number, because 518965813 - 2⁵ = 518965781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518965819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 866088 + ... + 866686.

It is an arithmetic number, because the mean of its divisors is an integer number (34272000).

Almost surely, 2^518965813 is an apocalyptic number.

It is an amenable number.

518965813 is a deficient number, since it is larger than the sum of its proper divisors (29386187).

518965813 is a wasteful number, since it uses less digits than its factorization.

518965813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032.

The product of its digits is 259200, while the sum is 46.

The square root of 518965813 is about 22780.8211660598. The cubic root of 518965813 is about 803.6116976169.

The spelling of 518965813 in words is "five hundred eighteen million, nine hundred sixty-five thousand, eight hundred thirteen".