19994168 has 16 divisors (see below), whose sum is σ = 38018160. Its totient is φ = 9856000.

The previous prime is 19994131. The next prime is 19994201. The reversal of 19994168 is 86149991.

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, 17033 + ... + 18168.

It is an arithmetic number, because the mean of its divisors is an integer number (2376135).

Almost surely, 2^19994168 is an apocalyptic number.

It is an amenable number.

19994168 is a deficient number, since it is larger than the sum of its proper divisors (18023992).

19994168 is a wasteful number, since it uses less digits than its factorization.

19994168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35278 (or 35274 counting only the distinct ones).

The product of its digits is 139968, while the sum is 47.

The square root of 19994168 is about 4471.4838700369. The cubic root of 19994168 is about 271.4153749553.

The spelling of 19994168 in words is "nineteen million, nine hundred ninety-four thousand, one hundred sixty-eight".