518059931 has 2 divisors, whose sum is σ = 518059932. Its totient is φ = 518059930.

The previous prime is 518059907. The next prime is 518059933. The reversal of 518059931 is 139950815.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-518059931 is a prime.

It is a super-2 number, since 2×518059931² = 536772184215449522, which contains 22 as substring.

Together with 518059933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (518059933) 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 as a sum of consecutive naturals, namely, 259029965 + 259029966.

It is an arithmetic number, because the mean of its divisors is an integer number (259029966).

Almost surely, 2^518059931 is an apocalyptic number.

518059931 is a deficient number, since it is larger than the sum of its proper divisors (1).

518059931 is an equidigital number, since it uses as much as digits as its factorization.

518059931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 518059931 is about 22760.9299238849. The cubic root of 518059931 is about 803.1438431912.

The spelling of 518059931 in words is "five hundred eighteen million, fifty-nine thousand, nine hundred thirty-one".