816368453 has 2 divisors, whose sum is σ = 816368454. Its totient is φ = 816368452.

The previous prime is 816368447. The next prime is 816368503. The reversal of 816368453 is 354863618.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 771839524 + 44528929 = 27782^2 + 6673^2 .

It is a cyclic number.

It is not a de Polignac number, because 816368453 - 2²⁰ = 815319877 is a prime.

It is a super-2 number, since 2×816368453² = 1332914902107226418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816362453) 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, 408184226 + 408184227.

It is an arithmetic number, because the mean of its divisors is an integer number (408184227).

Almost surely, 2^816368453 is an apocalyptic number.

It is an amenable number.

816368453 is a deficient number, since it is larger than the sum of its proper divisors (1).

816368453 is an equidigital number, since it uses as much as digits as its factorization.

816368453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 414720, while the sum is 44.

The square root of 816368453 is about 28572.1622037955. The cubic root of 816368453 is about 934.6063726719.

The spelling of 816368453 in words is "eight hundred sixteen million, three hundred sixty-eight thousand, four hundred fifty-three".