816585983 has 2 divisors, whose sum is σ = 816585984. Its totient is φ = 816585982.

The previous prime is 816585919. The next prime is 816586021. The reversal of 816585983 is 389585618.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816585983 - 2⁶ = 816585919 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 (816585383) 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, 408292991 + 408292992.

It is an arithmetic number, because the mean of its divisors is an integer number (408292992).

Almost surely, 2^816585983 is an apocalyptic number.

816585983 is a deficient number, since it is larger than the sum of its proper divisors (1).

816585983 is an equidigital number, since it uses as much as digits as its factorization.

816585983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2073600, while the sum is 53.

The square root of 816585983 is about 28575.9686275024. The cubic root of 816585983 is about 934.6893772142.

The spelling of 816585983 in words is "eight hundred sixteen million, five hundred eighty-five thousand, nine hundred eighty-three".