516812368 has 20 divisors (see below), whose sum is σ = 1001953108. Its totient is φ = 258243840.

The previous prime is 516812363. The next prime is 516812371. The reversal of 516812368 is 863218615.

It can be written as a sum of positive squares in 2 ways, for example, as 11102224 + 505710144 = 3332^2 + 22488^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 516812368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516812363) by changing a digit.

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, 18580 + ... + 37132.

Almost surely, 2^516812368 is an apocalyptic number.

It is an amenable number.

516812368 is a deficient number, since it is larger than the sum of its proper divisors (485140740).

516812368 is a wasteful number, since it uses less digits than its factorization.

516812368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20302 (or 20296 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 516812368 is about 22733.5076044151. The cubic root of 516812368 is about 802.4986296046.

The spelling of 516812368 in words is "five hundred sixteen million, eight hundred twelve thousand, three hundred sixty-eight".