518413939 has 2 divisors, whose sum is σ = 518413940. Its totient is φ = 518413938.

The previous prime is 518413937. The next prime is 518413949. The reversal of 518413939 is 939314815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 518413939 - 2¹ = 518413937 is a prime.

Together with 518413937, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 518413895 and 518413904.

It is not a weakly prime, because it can be changed into another prime (518413937) 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, 259206969 + 259206970.

It is an arithmetic number, because the mean of its divisors is an integer number (259206970).

Almost surely, 2^518413939 is an apocalyptic number.

518413939 is a deficient number, since it is larger than the sum of its proper divisors (1).

518413939 is an equidigital number, since it uses as much as digits as its factorization.

518413939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 43.

The square root of 518413939 is about 22768.7052552401. The cubic root of 518413939 is about 803.3267400540.

The spelling of 518413939 in words is "five hundred eighteen million, four hundred thirteen thousand, nine hundred thirty-nine".