8116431187 has 2 divisors, whose sum is σ = 8116431188. Its totient is φ = 8116431186.

The previous prime is 8116431181. The next prime is 8116431221. The reversal of 8116431187 is 7811346118.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8116431187 is a prime.

It is not a weakly prime, because it can be changed into another prime (8116431181) 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, 4058215593 + 4058215594.

It is an arithmetic number, because the mean of its divisors is an integer number (4058215594).

Almost surely, 2^8116431187 is an apocalyptic number.

8116431187 is a deficient number, since it is larger than the sum of its proper divisors (1).

8116431187 is an equidigital number, since it uses as much as digits as its factorization.

8116431187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 40.

The square root of 8116431187 is about 90091.2381255802. The cubic root of 8116431187 is about 2009.6559056363.

The spelling of 8116431187 in words is "eight billion, one hundred sixteen million, four hundred thirty-one thousand, one hundred eighty-seven".