191156 has 12 divisors (see below), whose sum is σ = 382368. Its totient is φ = 81912.

The previous prime is 191143. The next prime is 191161. The reversal of 191156 is 651191.

191156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

191156 is an admirable number.

It is a congruent number.

It is an unprimeable number.

191156 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, 3386 + ... + 3441.

It is an arithmetic number, because the mean of its divisors is an integer number (31864).

2¹⁹¹¹⁵⁶ is an apocalyptic number.

It is an amenable number.

191156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

191156 is a wasteful number, since it uses less digits than its factorization.

191156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6838 (or 6836 counting only the distinct ones).

The product of its digits is 270, while the sum is 23.

The square root of 191156 is about 437.2139064577. The cubic root of 191156 is about 57.6053267965.

The spelling of 191156 in words is "one hundred ninety-one thousand, one hundred fifty-six".