191168 has 28 divisors (see below), whose sum is σ = 396240. Its totient is φ = 91392.

The previous prime is 191161. The next prime is 191173. The reversal of 191168 is 861191.

Its product of digits (432) is a multiple of the sum of its prime factors (144).

It is not an unprimeable number, because it can be changed into a prime (191161) by changing a digit.

191168 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1805 + ... + 1907.

2¹⁹¹¹⁶⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198120).

191168 is an abundant number, since it is smaller than the sum of its proper divisors (205072).

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

191168 is a wasteful number, since it uses less digits than its factorization.

191168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 134 counting only the distinct ones).

The product of its digits is 432, while the sum is 26.

The square root of 191168 is about 437.2276295021. The cubic root of 191168 is about 57.6065321810.

The spelling of 191168 in words is "one hundred ninety-one thousand, one hundred sixty-eight".