8199191080 has 16 divisors (see below), whose sum is σ = 18448180020. Its totient is φ = 3279676416.

The previous prime is 8199191053. The next prime is 8199191081. The reversal of 8199191080 is 801919918.

It can be written as a sum of positive squares in 2 ways, for example, as 7702168644 + 497022436 = 87762^2 + 22294^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8199191080.

It is not an unprimeable number, because it can be changed into a prime (8199191081) 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 3 ways as a sum of consecutive naturals, for example, 102489849 + ... + 102489928.

Almost surely, 2^8199191080 is an apocalyptic number.

It is an amenable number.

8199191080 is an abundant number, since it is smaller than the sum of its proper divisors (10248988940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8199191080 is a wasteful number, since it uses less digits than its factorization.

8199191080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204979788 (or 204979784 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 46.

The square root of 8199191080 is about 90549.3847577111. The cubic root of 8199191080 is about 2016.4633636398.

The spelling of 8199191080 in words is "eight billion, one hundred ninety-nine million, one hundred ninety-one thousand, eighty".