194995794172 has 12 divisors (see below), whose sum is σ = 341253041976. Its totient is φ = 97494925040.

The previous prime is 194995794167. The next prime is 194995794181. The reversal of 194995794172 is 271497599491.

It is a junction number, because it is equal to n+sod(n) for n = 194995794098 and 194995794107.

It is a congruent number.

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, 591979 + ... + 860482.

It is an arithmetic number, because the mean of its divisors is an integer number (28437753498).

Almost surely, 2^194995794172 is an apocalyptic number.

It is an amenable number.

194995794172 is a deficient number, since it is larger than the sum of its proper divisors (146257247804).

194995794172 is a wasteful number, since it uses less digits than its factorization.

194995794172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486028 (or 1486026 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 67.

The spelling of 194995794172 in words is "one hundred ninety-four billion, nine hundred ninety-five million, seven hundred ninety-four thousand, one hundred seventy-two".