8191379079 has 48 divisors (see below), whose sum is σ = 12903846592. Its totient is φ = 4977137664.

The previous prime is 8191379071. The next prime is 8191379087. The reversal of 8191379079 is 9709731918.

It is an interprime number because it is at equal distance from previous prime (8191379071) and next prime (8191379087).

It is not a de Polignac number, because 8191379079 - 2³ = 8191379071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8191379071) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 9339789 + ... + 9340665.

Almost surely, 2^8191379079 is an apocalyptic number.

8191379079 is a deficient number, since it is larger than the sum of its proper divisors (4712467513).

8191379079 is a wasteful number, since it uses less digits than its factorization.

8191379079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 54.

The square root of 8191379079 is about 90506.2377905523. The cubic root of 8191379079 is about 2015.8227468107.

The spelling of 8191379079 in words is "eight billion, one hundred ninety-one million, three hundred seventy-nine thousand, seventy-nine".