8188998791 has 2 divisors, whose sum is σ = 8188998792. Its totient is φ = 8188998790.

The previous prime is 8188998739. The next prime is 8188998823. The reversal of 8188998791 is 1978998818.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8188998791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8188998721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4094499395 + 4094499396.

It is an arithmetic number, because the mean of its divisors is an integer number (4094499396).

Almost surely, 2^8188998791 is an apocalyptic number.

8188998791 is a deficient number, since it is larger than the sum of its proper divisors (1).

8188998791 is an equidigital number, since it uses as much as digits as its factorization.

8188998791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20901888, while the sum is 68.

The square root of 8188998791 is about 90493.0869790616. The cubic root of 8188998791 is about 2015.6274722630.

The spelling of 8188998791 in words is "eight billion, one hundred eighty-eight million, nine hundred ninety-eight thousand, seven hundred ninety-one".