8082191097 has 10 divisors (see below), whose sum is σ = 12073396698. Its totient is φ = 5388127344.

The previous prime is 8082191081. The next prime is 8082191171. The reversal of 8082191097 is 7901912808.

It can be written as a sum of positive squares in only one way, i.e., 8082189801 + 1296 = 89901^2 + 36^2 .

It is not a de Polignac number, because 8082191097 - 2⁴ = 8082191081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8082191197) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 49889988 + ... + 49890149.

Almost surely, 2^8082191097 is an apocalyptic number.

It is an amenable number.

8082191097 is a deficient number, since it is larger than the sum of its proper divisors (3991205601).

8082191097 is an equidigital number, since it uses as much as digits as its factorization.

8082191097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99780149 (or 99780140 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The square root of 8082191097 is about 89901.0072079284. The cubic root of 8082191097 is about 2006.8259348862.

The spelling of 8082191097 in words is "eight billion, eighty-two million, one hundred ninety-one thousand, ninety-seven".