191136 has 48 divisors (see below), whose sum is σ = 550368. Its totient is φ = 57600.

The previous prime is 191123. The next prime is 191137. The reversal of 191136 is 631191.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (191137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966 + ... + 1146.

It is an arithmetic number, because the mean of its divisors is an integer number (11466).

2¹⁹¹¹³⁶ is an apocalyptic number.

191136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 191136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275184).

191136 is an abundant number, since it is smaller than the sum of its proper divisors (359232).

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

191136 is a wasteful number, since it uses less digits than its factorization.

191136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205 (or 197 counting only the distinct ones).

The product of its digits is 162, while the sum is 21.

The square root of 191136 is about 437.1910337598. The cubic root of 191136 is about 57.6033177101.

The spelling of 191136 in words is "one hundred ninety-one thousand, one hundred thirty-six".