8191074671 has 4 divisors (see below), whose sum is σ = 8821157352. Its totient is φ = 7560991992.

The previous prime is 8191074653. The next prime is 8191074713. The reversal of 8191074671 is 1764701918.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8191074671 - 2¹⁸ = 8190812527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8191074611) 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 in 3 ways as a sum of consecutive naturals, for example, 315041321 + ... + 315041346.

It is an arithmetic number, because the mean of its divisors is an integer number (2205289338).

Almost surely, 2^8191074671 is an apocalyptic number.

8191074671 is a deficient number, since it is larger than the sum of its proper divisors (630082681).

8191074671 is a wasteful number, since it uses less digits than its factorization.

8191074671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630082680.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 8191074671 is about 90504.5560786859. The cubic root of 8191074671 is about 2015.7977758355.

The spelling of 8191074671 in words is "eight billion, one hundred ninety-one million, seventy-four thousand, six hundred seventy-one".