518326817 has 2 divisors, whose sum is σ = 518326818. Its totient is φ = 518326816.

The previous prime is 518326811. The next prime is 518326829. The reversal of 518326817 is 718623815.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 513656896 + 4669921 = 22664^2 + 2161^2 .

It is a cyclic number.

It is not a de Polignac number, because 518326817 - 2²⁶ = 451217953 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (518326811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 259163408 + 259163409.

It is an arithmetic number, because the mean of its divisors is an integer number (259163409).

Almost surely, 2^518326817 is an apocalyptic number.

It is an amenable number.

518326817 is a deficient number, since it is larger than the sum of its proper divisors (1).

518326817 is an equidigital number, since it uses as much as digits as its factorization.

518326817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 518326817 is about 22766.7919786693. The cubic root of 518326817 is about 803.2817365360.

The spelling of 518326817 in words is "five hundred eighteen million, three hundred twenty-six thousand, eight hundred seventeen".