8108196538 has 8 divisors (see below), whose sum is σ = 13097855988. Its totient is φ = 3742244544.

The previous prime is 8108196497. The next prime is 8108196559. The reversal of 8108196538 is 8356918018.

It can be written as a sum of positive squares in 2 ways, for example, as 7946474449 + 161722089 = 89143^2 + 12717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 8108196491 and 8108196500.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155926831 + ... + 155926882.

Almost surely, 2^8108196538 is an apocalyptic number.

8108196538 is a deficient number, since it is larger than the sum of its proper divisors (4989659450).

8108196538 is a wasteful number, since it uses less digits than its factorization.

8108196538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311853728.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 8108196538 is about 90045.5248082879. The cubic root of 8108196538 is about 2008.9760333137.

The spelling of 8108196538 in words is "eight billion, one hundred eight million, one hundred ninety-six thousand, five hundred thirty-eight".