18734722194 has 16 divisors (see below), whose sum is σ = 39673529568. Its totient is φ = 5877559872.

The previous prime is 18734722169. The next prime is 18734722207. The reversal of 18734722194 is 49122743781.

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, 91836772 + ... + 91836975.

It is an arithmetic number, because the mean of its divisors is an integer number (2479595598).

Almost surely, 2^18734722194 is an apocalyptic number.

18734722194 is an abundant number, since it is smaller than the sum of its proper divisors (20938807374).

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

18734722194 is a wasteful number, since it uses less digits than its factorization.

18734722194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183673769.

The product of its digits is 677376, while the sum is 48.

The spelling of 18734722194 in words is "eighteen billion, seven hundred thirty-four million, seven hundred twenty-two thousand, one hundred ninety-four".