518761013 has 4 divisors (see below), whose sum is σ = 521219808. Its totient is φ = 516302220.

The previous prime is 518761007. The next prime is 518761051. The reversal of 518761013 is 310167815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 518761013 - 2²² = 514566709 is a prime.

It is a super-2 number, since 2×518761013² = 538225977217572338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518761213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1229081 + ... + 1229502.

It is an arithmetic number, because the mean of its divisors is an integer number (130304952).

Almost surely, 2^518761013 is an apocalyptic number.

It is an amenable number.

518761013 is a deficient number, since it is larger than the sum of its proper divisors (2458795).

518761013 is a wasteful number, since it uses less digits than its factorization.

518761013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2458794.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 518761013 is about 22776.3257133366. The cubic root of 518761013 is about 803.5059736779.

The spelling of 518761013 in words is "five hundred eighteen million, seven hundred sixty-one thousand, thirteen".