9982116857 has 2 divisors, whose sum is σ = 9982116858. Its totient is φ = 9982116856.

The previous prime is 9982116853. The next prime is 9982116869. The reversal of 9982116857 is 7586112899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9940887616 + 41229241 = 99704^2 + 6421^2 .

It is a cyclic number.

It is not a de Polignac number, because 9982116857 - 2² = 9982116853 is a prime.

It is not a weakly prime, because it can be changed into another prime (9982116853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991058428 + 4991058429.

It is an arithmetic number, because the mean of its divisors is an integer number (4991058429).

Almost surely, 2^9982116857 is an apocalyptic number.

It is an amenable number.

9982116857 is a deficient number, since it is larger than the sum of its proper divisors (1).

9982116857 is an equidigital number, since it uses as much as digits as its factorization.

9982116857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 56.

The square root of 9982116857 is about 99910.5442733649. The cubic root of 9982116857 is about 2153.1496549234.

The spelling of 9982116857 in words is "nine billion, nine hundred eighty-two million, one hundred sixteen thousand, eight hundred fifty-seven".