513515990 has 16 divisors (see below), whose sum is σ = 995431248. Its totient is φ = 189605856.

The previous prime is 513515971. The next prime is 513516001. The reversal of 513515990 is 99515315.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1974932 + ... + 1975191.

It is an arithmetic number, because the mean of its divisors is an integer number (62214453).

Almost surely, 2^513515990 is an apocalyptic number.

513515990 is a deficient number, since it is larger than the sum of its proper divisors (481915258).

513515990 is a wasteful number, since it uses less digits than its factorization.

513515990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950143.

The product of its (nonzero) digits is 30375, while the sum is 38.

The square root of 513515990 is about 22660.8912004802. The cubic root of 513515990 is about 800.7888001124.

The spelling of 513515990 in words is "five hundred thirteen million, five hundred fifteen thousand, nine hundred ninety".