520186490 has 16 divisors (see below), whose sum is σ = 937730952. Its totient is φ = 207764544.

The previous prime is 520186487. The next prime is 520186507. The reversal of 520186490 is 94681025.

It can be written as a sum of positive squares in 4 ways, for example, as 511619161 + 8567329 = 22619^2 + 2927^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 520186490.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31649 + ... + 45188.

Almost surely, 2^520186490 is an apocalyptic number.

520186490 is a deficient number, since it is larger than the sum of its proper divisors (417544462).

520186490 is a wasteful number, since it uses less digits than its factorization.

520186490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77521.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 520186490 is about 22807.5971991790. The cubic root of 520186490 is about 804.2412716571.

The spelling of 520186490 in words is "five hundred twenty million, one hundred eighty-six thousand, four hundred ninety".