518369939 has 2 divisors, whose sum is σ = 518369940. Its totient is φ = 518369938.

The previous prime is 518369927. The next prime is 518369959. The reversal of 518369939 is 939963815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 518369939 - 2¹² = 518365843 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (518369959) by changing a digit.

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 as a sum of consecutive naturals, namely, 259184969 + 259184970.

It is an arithmetic number, because the mean of its divisors is an integer number (259184970).

Almost surely, 2^518369939 is an apocalyptic number.

518369939 is a deficient number, since it is larger than the sum of its proper divisors (1).

518369939 is an equidigital number, since it uses as much as digits as its factorization.

518369939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1574640, while the sum is 53.

The square root of 518369939 is about 22767.7389962201. The cubic root of 518369939 is about 803.3040121565.

The spelling of 518369939 in words is "five hundred eighteen million, three hundred sixty-nine thousand, nine hundred thirty-nine".