191768 has 8 divisors (see below), whose sum is σ = 359580. Its totient is φ = 95880.

The previous prime is 191749. The next prime is 191773. The reversal of 191768 is 867191.

191768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

191768 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 as a sum of consecutive naturals, namely, 11978 + ... + 11993.

2¹⁹¹⁷⁶⁸ is an apocalyptic number.

It is an amenable number.

191768 is a deficient number, since it is larger than the sum of its proper divisors (167812).

191768 is a wasteful number, since it uses less digits than its factorization.

191768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23977 (or 23973 counting only the distinct ones).

The product of its digits is 3024, while the sum is 32.

The square root of 191768 is about 437.9132334150. The cubic root of 191768 is about 57.6667372039. Note that the first 3 decimals are identical.

It can be divided in two parts, 191 and 768, that added together give a palindrome (959).

The spelling of 191768 in words is "one hundred ninety-one thousand, seven hundred sixty-eight".