816443713 has 2 divisors, whose sum is σ = 816443714. Its totient is φ = 816443712.

The previous prime is 816443689. The next prime is 816443723. The reversal of 816443713 is 317344618.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 799079824 + 17363889 = 28268^2 + 4167^2 .

It is a cyclic number.

It is not a de Polignac number, because 816443713 - 2¹⁷ = 816312641 is a prime.

It is not a weakly prime, because it can be changed into another prime (816443723) 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, 408221856 + 408221857.

It is an arithmetic number, because the mean of its divisors is an integer number (408221857).

Almost surely, 2^816443713 is an apocalyptic number.

It is an amenable number.

816443713 is a deficient number, since it is larger than the sum of its proper divisors (1).

816443713 is an equidigital number, since it uses as much as digits as its factorization.

816443713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 37.

The square root of 816443713 is about 28573.4791896262. The cubic root of 816443713 is about 934.6350918587.

The spelling of 816443713 in words is "eight hundred sixteen million, four hundred forty-three thousand, seven hundred thirteen".