518861339 has 2 divisors, whose sum is σ = 518861340. Its totient is φ = 518861338.

The previous prime is 518861311. The next prime is 518861389. The reversal of 518861339 is 933168815.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 518861339 - 2¹² = 518857243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 518861339.

It is not a weakly prime, because it can be changed into another prime (518861389) 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, 259430669 + 259430670.

It is an arithmetic number, because the mean of its divisors is an integer number (259430670).

Almost surely, 2^518861339 is an apocalyptic number.

518861339 is a deficient number, since it is larger than the sum of its proper divisors (1).

518861339 is an equidigital number, since it uses as much as digits as its factorization.

518861339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 44.

The square root of 518861339 is about 22778.5280253137. The cubic root of 518861339 is about 803.5577684622.

The spelling of 518861339 in words is "five hundred eighteen million, eight hundred sixty-one thousand, three hundred thirty-nine".