520513018 has 16 divisors (see below), whose sum is σ = 822421440. Its totient is φ = 246391200.

The previous prime is 520512991. The next prime is 520513051. The reversal of 520513018 is 810315025.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 520512983 and 520513001.

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, 65838 + ... + 73318.

It is an arithmetic number, because the mean of its divisors is an integer number (51401340).

Almost surely, 2^520513018 is an apocalyptic number.

520513018 is a deficient number, since it is larger than the sum of its proper divisors (301908422).

520513018 is a wasteful number, since it uses less digits than its factorization.

520513018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9333.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 520513018 is about 22814.7543927170. The cubic root of 520513018 is about 804.4095141181.

The spelling of 520513018 in words is "five hundred twenty million, five hundred thirteen thousand, eighteen".