8116989193 has 2 divisors, whose sum is σ = 8116989194. Its totient is φ = 8116989192.

The previous prime is 8116989187. The next prime is 8116989211. The reversal of 8116989193 is 3919896118.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4859205264 + 3257783929 = 69708^2 + 57077^2 .

It is a cyclic number.

It is not a de Polignac number, because 8116989193 - 2⁹ = 8116988681 is a prime.

It is not a weakly prime, because it can be changed into another prime (8116989103) 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, 4058494596 + 4058494597.

It is an arithmetic number, because the mean of its divisors is an integer number (4058494597).

Almost surely, 2^8116989193 is an apocalyptic number.

It is an amenable number.

8116989193 is a deficient number, since it is larger than the sum of its proper divisors (1).

8116989193 is an equidigital number, since it uses as much as digits as its factorization.

8116989193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 55.

The square root of 8116989193 is about 90094.3349661897. The cubic root of 8116989193 is about 2009.7019593073.

The spelling of 8116989193 in words is "eight billion, one hundred sixteen million, nine hundred eighty-nine thousand, one hundred ninety-three".