8191293974 has 16 divisors (see below), whose sum is σ = 13129063200. Its totient is φ = 3819360384.

The previous prime is 8191293947. The next prime is 8191293989. The reversal of 8191293974 is 4793921918.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1101434 + ... + 1108845.

It is an arithmetic number, because the mean of its divisors is an integer number (820566450).

Almost surely, 2^8191293974 is an apocalyptic number.

8191293974 is a deficient number, since it is larger than the sum of its proper divisors (4937769226).

8191293974 is a wasteful number, since it uses less digits than its factorization.

8191293974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210407.

The product of its digits is 979776, while the sum is 53.

The square root of 8191293974 is about 90505.7676283672. The cubic root of 8191293974 is about 2015.8157656016.

The spelling of 8191293974 in words is "eight billion, one hundred ninety-one million, two hundred ninety-three thousand, nine hundred seventy-four".