513143685 has 24 divisors (see below), whose sum is σ = 928122624. Its totient is φ = 261777120.

The previous prime is 513143681. The next prime is 513143693. The reversal of 513143685 is 586341315.

It is not a de Polignac number, because 513143685 - 2² = 513143681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513143681) 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 23 ways as a sum of consecutive naturals, for example, 246861 + ... + 248930.

It is an arithmetic number, because the mean of its divisors is an integer number (38671776).

Almost surely, 2^513143685 is an apocalyptic number.

It is an amenable number.

513143685 is a deficient number, since it is larger than the sum of its proper divisors (414978939).

513143685 is a wasteful number, since it uses less digits than its factorization.

513143685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495825 (or 495822 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 513143685 is about 22652.6750076012. The cubic root of 513143685 is about 800.5952262931.

The spelling of 513143685 in words is "five hundred thirteen million, one hundred forty-three thousand, six hundred eighty-five".