518117039 has 8 divisors (see below), whose sum is σ = 569891280. Its totient is φ = 471014280.

The previous prime is 518117011. The next prime is 518117059. The reversal of 518117039 is 930711815.

It is a de Polignac number, because none of the positive numbers 2^k-518117039 is a prime.

It is a super-2 number, since 2×518117039² = 536890532204255042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (518117059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193304 + ... + 195965.

It is an arithmetic number, because the mean of its divisors is an integer number (71236410).

Almost surely, 2^518117039 is an apocalyptic number.

518117039 is a deficient number, since it is larger than the sum of its proper divisors (51774241).

518117039 is an equidigital number, since it uses as much as digits as its factorization.

518117039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389302 (or 389280 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 35.

The square root of 518117039 is about 22762.1844074772. The cubic root of 518117039 is about 803.1733534535.

The spelling of 518117039 in words is "five hundred eighteen million, one hundred seventeen thousand, thirty-nine".