513139980 has 48 divisors (see below), whose sum is σ = 1440198144. Its totient is φ = 136512960.

The previous prime is 513139967. The next prime is 513139981. The reversal of 513139980 is 89931315.

It is not an unprimeable number, because it can be changed into a prime (513139981) 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, 15939 + ... + 35781.

It is an arithmetic number, because the mean of its divisors is an integer number (30004128).

Almost surely, 2^513139980 is an apocalyptic number.

It is an amenable number.

513139980 is an abundant number, since it is smaller than the sum of its proper divisors (927058164).

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

513139980 is a wasteful number, since it uses less digits than its factorization.

513139980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20286 (or 20284 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 513139980 is about 22652.5932290323. The cubic root of 513139980 is about 800.5932994692.

The spelling of 513139980 in words is "five hundred thirteen million, one hundred thirty-nine thousand, nine hundred eighty".