816982783 has 2 divisors, whose sum is σ = 816982784. Its totient is φ = 816982782.

The previous prime is 816982781. The next prime is 816982799. The reversal of 816982783 is 387289618.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 816982783 - 2¹ = 816982781 is a prime.

Together with 816982781, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 816982783.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (816982781) 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, 408491391 + 408491392.

It is an arithmetic number, because the mean of its divisors is an integer number (408491392).

Almost surely, 2^816982783 is an apocalyptic number.

816982783 is a deficient number, since it is larger than the sum of its proper divisors (1).

816982783 is an equidigital number, since it uses as much as digits as its factorization.

816982783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 52.

The square root of 816982783 is about 28582.9106810346. The cubic root of 816982783 is about 934.8407491843.

The spelling of 816982783 in words is "eight hundred sixteen million, nine hundred eighty-two thousand, seven hundred eighty-three".