513890538 has 48 divisors (see below), whose sum is σ = 1197640224. Its totient is φ = 146573280.

The previous prime is 513890537. The next prime is 513890543. The reversal of 513890538 is 835098315.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 513890538.

It is not an unprimeable number, because it can be changed into a prime (513890537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 230268 + ... + 232488.

It is an arithmetic number, because the mean of its divisors is an integer number (24950838).

Almost surely, 2^513890538 is an apocalyptic number.

513890538 is an abundant number, since it is smaller than the sum of its proper divisors (683749686).

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

513890538 is a wasteful number, since it uses less digits than its factorization.

513890538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3027 (or 3020 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 513890538 is about 22669.1538880480. The cubic root of 513890538 is about 800.9834457560.

The spelling of 513890538 in words is "five hundred thirteen million, eight hundred ninety thousand, five hundred thirty-eight".