82115983 has 2 divisors, whose sum is σ = 82115984. Its totient is φ = 82115982.

The previous prime is 82115963. The next prime is 82116011. The reversal of 82115983 is 38951128.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82115983 - 2⁵ = 82115951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82115923) 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, 41057991 + 41057992.

It is an arithmetic number, because the mean of its divisors is an integer number (41057992).

Almost surely, 2^82115983 is an apocalyptic number.

82115983 is a deficient number, since it is larger than the sum of its proper divisors (1).

82115983 is an equidigital number, since it uses as much as digits as its factorization.

82115983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 37.

The square root of 82115983 is about 9061.7869650528. The cubic root of 82115983 is about 434.6528837853.

The spelling of 82115983 in words is "eighty-two million, one hundred fifteen thousand, nine hundred eighty-three".