8193921100 has 36 divisors (see below), whose sum is σ = 17817425584. Its totient is φ = 3270818880.

The previous prime is 8193921089. The next prime is 8193921101. The reversal of 8193921100 is 11293918.

It is not an unprimeable number, because it can be changed into a prime (8193921101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35427 + ... + 132826.

Almost surely, 2^8193921100 is an apocalyptic number.

It is an amenable number.

8193921100 is an abundant number, since it is smaller than the sum of its proper divisors (9623504484).

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

8193921100 is a wasteful number, since it uses less digits than its factorization.

8193921100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168754 (or 168747 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 8193921100 is about 90520.2800481748. The cubic root of 8193921100 is about 2016.0312478753.

The spelling of 8193921100 in words is "eight billion, one hundred ninety-three million, nine hundred twenty-one thousand, one hundred".