8491123995 has 16 divisors (see below), whose sum is σ = 13590685440. Its totient is φ = 4526970464.

The previous prime is 8491123981. The next prime is 8491124021. The reversal of 8491123995 is 5993211948.

It is a cyclic number.

It is not a de Polignac number, because 8491123995 - 2⁷ = 8491123867 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58119 + ... + 142688.

It is an arithmetic number, because the mean of its divisors is an integer number (849417840).

Almost surely, 2^8491123995 is an apocalyptic number.

8491123995 is a deficient number, since it is larger than the sum of its proper divisors (5099561445).

8491123995 is a wasteful number, since it uses less digits than its factorization.

8491123995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203634.

The product of its digits is 699840, while the sum is 51.

The square root of 8491123995 is about 92147.2951040886. The cubic root of 8491123995 is about 2040.1169350983.

The spelling of 8491123995 in words is "eight billion, four hundred ninety-one million, one hundred twenty-three thousand, nine hundred ninety-five".