518792489 has 2 divisors, whose sum is σ = 518792490. Its totient is φ = 518792488.

The previous prime is 518792453. The next prime is 518792497. The reversal of 518792489 is 984297815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 476112400 + 42680089 = 21820^2 + 6533^2 .

It is a cyclic number.

It is not a de Polignac number, because 518792489 - 2¹² = 518788393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 518792489.

It is not a weakly prime, because it can be changed into another prime (518791489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259396244 + 259396245.

It is an arithmetic number, because the mean of its divisors is an integer number (259396245).

Almost surely, 2^518792489 is an apocalyptic number.

It is an amenable number.

518792489 is a deficient number, since it is larger than the sum of its proper divisors (1).

518792489 is an equidigital number, since it uses as much as digits as its factorization.

518792489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 53.

The square root of 518792489 is about 22777.0166834904. The cubic root of 518792489 is about 803.5222243482.

The spelling of 518792489 in words is "five hundred eighteen million, seven hundred ninety-two thousand, four hundred eighty-nine".