8194420018 has 16 divisors (see below), whose sum is σ = 12385044000. Its totient is φ = 4066096032.

The previous prime is 8194420009. The next prime is 8194420021. The reversal of 8194420018 is 8100244918.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979678 + ... + 988006.

It is an arithmetic number, because the mean of its divisors is an integer number (774065250).

Almost surely, 2^8194420018 is an apocalyptic number.

8194420018 is a deficient number, since it is larger than the sum of its proper divisors (4190623982).

8194420018 is a wasteful number, since it uses less digits than its factorization.

8194420018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12009.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 8194420018 is about 90523.0358417127. The cubic root of 8194420018 is about 2016.0721649508.

The spelling of 8194420018 in words is "eight billion, one hundred ninety-four million, four hundred twenty thousand, eighteen".