518744680 has 16 divisors (see below), whose sum is σ = 1167175620. Its totient is φ = 207497856.

The previous prime is 518744659. The next prime is 518744701. The reversal of 518744680 is 86447815.

It is an interprime number because it is at equal distance from previous prime (518744659) and next prime (518744701).

It can be written as a sum of positive squares in 2 ways, for example, as 516834756 + 1909924 = 22734^2 + 1382^2 .

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 3 ways as a sum of consecutive naturals, for example, 6484269 + ... + 6484348.

Almost surely, 2^518744680 is an apocalyptic number.

It is an amenable number.

518744680 is an abundant number, since it is smaller than the sum of its proper divisors (648430940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

518744680 is a wasteful number, since it uses less digits than its factorization.

518744680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12968628 (or 12968624 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The square root of 518744680 is about 22775.9671583887. The cubic root of 518744680 is about 803.4975408926.

The spelling of 518744680 in words is "five hundred eighteen million, seven hundred forty-four thousand, six hundred eighty".