191994116 has 12 divisors (see below), whose sum is σ = 337086288. Its totient is φ = 95683752.

The previous prime is 191994091. The next prime is 191994169. The reversal of 191994116 is 611499191.

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, 76946 + ... + 79401.

It is an arithmetic number, because the mean of its divisors is an integer number (28090524).

Almost surely, 2^191994116 is an apocalyptic number.

It is an amenable number.

191994116 is a deficient number, since it is larger than the sum of its proper divisors (145092172).

191994116 is a wasteful number, since it uses less digits than its factorization.

191994116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156658 (or 156656 counting only the distinct ones).

The product of its digits is 17496, while the sum is 41.

The square root of 191994116 is about 13856.1941383628. The cubic root of 191994116 is about 576.8939348708.

The spelling of 191994116 in words is "one hundred ninety-one million, nine hundred ninety-four thousand, one hundred sixteen".