8116891379 has 2 divisors, whose sum is σ = 8116891380. Its totient is φ = 8116891378.

The previous prime is 8116891351. The next prime is 8116891381. The reversal of 8116891379 is 9731986118.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8116891379 - 2²⁰ = 8115842803 is a prime.

Together with 8116891381, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8116891379.

It is not a weakly prime, because it can be changed into another prime (8116891879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4058445689 + 4058445690.

It is an arithmetic number, because the mean of its divisors is an integer number (4058445690).

Almost surely, 2^8116891379 is an apocalyptic number.

8116891379 is a deficient number, since it is larger than the sum of its proper divisors (1).

8116891379 is an equidigital number, since it uses as much as digits as its factorization.

8116891379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 53.

The square root of 8116891379 is about 90093.7921224321. The cubic root of 8116891379 is about 2009.6938866187.

The spelling of 8116891379 in words is "eight billion, one hundred sixteen million, eight hundred ninety-one thousand, three hundred seventy-nine".