816322433 has 2 divisors, whose sum is σ = 816322434. Its totient is φ = 816322432.

The previous prime is 816322399. The next prime is 816322447. The reversal of 816322433 is 334223618.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 796537729 + 19784704 = 28223^2 + 4448^2 .

It is a cyclic number.

It is not a de Polignac number, because 816322433 - 2¹⁶ = 816256897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 816322433.

It is not a weakly prime, because it can be changed into another prime (816322933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408161216 + 408161217.

It is an arithmetic number, because the mean of its divisors is an integer number (408161217).

Almost surely, 2^816322433 is an apocalyptic number.

It is an amenable number.

816322433 is a deficient number, since it is larger than the sum of its proper divisors (1).

816322433 is an equidigital number, since it uses as much as digits as its factorization.

816322433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 32.

The square root of 816322433 is about 28571.3568631243. The cubic root of 816322433 is about 934.5888105882.

The spelling of 816322433 in words is "eight hundred sixteen million, three hundred twenty-two thousand, four hundred thirty-three".