516318893 has 2 divisors, whose sum is σ = 516318894. Its totient is φ = 516318892.

The previous prime is 516318889. The next prime is 516318941. The reversal of 516318893 is 398813615.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 433180969 + 83137924 = 20813^2 + 9118^2 .

It is a cyclic number.

It is not a de Polignac number, because 516318893 - 2² = 516318889 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (516218893) 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, 258159446 + 258159447.

It is an arithmetic number, because the mean of its divisors is an integer number (258159447).

Almost surely, 2^516318893 is an apocalyptic number.

It is an amenable number.

516318893 is a deficient number, since it is larger than the sum of its proper divisors (1).

516318893 is an equidigital number, since it uses as much as digits as its factorization.

516318893 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 516318893 is about 22722.6515398181. The cubic root of 516318893 is about 802.2431280299.

The spelling of 516318893 in words is "five hundred sixteen million, three hundred eighteen thousand, eight hundred ninety-three".