191445168 has 20 divisors (see below), whose sum is σ = 494566808. Its totient is φ = 63815040.

The previous prime is 191445157. The next prime is 191445187. The reversal of 191445168 is 861544191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1994173 + ... + 1994268.

Almost surely, 2^191445168 is an apocalyptic number.

It is an amenable number.

191445168 is an abundant number, since it is smaller than the sum of its proper divisors (303121640).

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

191445168 is a wasteful number, since it uses less digits than its factorization.

191445168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3988452 (or 3988446 counting only the distinct ones).

The product of its digits is 34560, while the sum is 39.

The square root of 191445168 is about 13836.3712005713. The cubic root of 191445168 is about 576.3435932257.

The spelling of 191445168 in words is "one hundred ninety-one million, four hundred forty-five thousand, one hundred sixty-eight".