194839818188 has 12 divisors (see below), whose sum is σ = 341220220152. Its totient is φ = 97348326720.

The previous prime is 194839818157. The next prime is 194839818191. The reversal of 194839818188 is 881818938491.

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, 17889470 + ... + 17900357.

It is an arithmetic number, because the mean of its divisors is an integer number (28435018346).

Almost surely, 2^194839818188 is an apocalyptic number.

It is an amenable number.

194839818188 is a deficient number, since it is larger than the sum of its proper divisors (146380401964).

194839818188 is a wasteful number, since it uses less digits than its factorization.

194839818188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35791192 (or 35791190 counting only the distinct ones).

The product of its digits is 31850496, while the sum is 68.

The spelling of 194839818188 in words is "one hundred ninety-four billion, eight hundred thirty-nine million, eight hundred eighteen thousand, one hundred eighty-eight".