513685874 has 32 divisors (see below), whose sum is σ = 881662320. Its totient is φ = 222711552.

The previous prime is 513685873. The next prime is 513685877. The reversal of 513685874 is 478586315.

It can be written as a sum of positive squares in 8 ways, for example, as 216295849 + 297390025 = 14707^2 + 17245^2 .

It is not an unprimeable number, because it can be changed into a prime (513685873) 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 15 ways as a sum of consecutive naturals, for example, 18692 + ... + 37104.

Almost surely, 2^513685874 is an apocalyptic number.

513685874 is a deficient number, since it is larger than the sum of its proper divisors (367976446).

513685874 is a wasteful number, since it uses less digits than its factorization.

513685874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18494.

The product of its digits is 806400, while the sum is 47.

The square root of 513685874 is about 22664.6392867833. The cubic root of 513685874 is about 800.8770973988.

The spelling of 513685874 in words is "five hundred thirteen million, six hundred eighty-five thousand, eight hundred seventy-four".