520464618 has 48 divisors (see below), whose sum is σ = 1139749416. Its totient is φ = 171642240.

The previous prime is 520464617. The next prime is 520464641. The reversal of 520464618 is 816464025.

520464618 is a `hidden beast` number, since 5 + 2 + 0 + 4 + 646 + 1 + 8 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 432348849 + 88115769 = 20793^2 + 9387^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (520464617) 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, 1236048 + ... + 1236468.

Almost surely, 2^520464618 is an apocalyptic number.

520464618 is an abundant number, since it is smaller than the sum of its proper divisors (619284798).

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

520464618 is a wasteful number, since it uses less digits than its factorization.

520464618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 520464618 is about 22813.6936509632. The cubic root of 520464618 is about 804.3845806224.

The spelling of 520464618 in words is "five hundred twenty million, four hundred sixty-four thousand, six hundred eighteen".