8191796205 has 32 divisors (see below), whose sum is σ = 14085028224. Its totient is φ = 4050579456.

The previous prime is 8191796191. The next prime is 8191796213. The reversal of 8191796205 is 5026971918.

It is not a de Polignac number, because 8191796205 - 2⁸ = 8191795949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222652 + ... + 256821.

It is an arithmetic number, because the mean of its divisors is an integer number (440157132).

Almost surely, 2^8191796205 is an apocalyptic number.

8191796205 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8191796205 is a deficient number, since it is larger than the sum of its proper divisors (5893232019).

8191796205 is a wasteful number, since it uses less digits than its factorization.

8191796205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479565.

The product of its (nonzero) digits is 272160, while the sum is 48.

The square root of 8191796205 is about 90508.5421659193. The cubic root of 8191796205 is about 2015.8569631821.

The spelling of 8191796205 in words is "eight billion, one hundred ninety-one million, seven hundred ninety-six thousand, two hundred five".