191137 has 2 divisors, whose sum is σ = 191138. Its totient is φ = 191136.

The previous prime is 191123. The next prime is 191141. The reversal of 191137 is 731191.

191137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147456 + 43681 = 384^2 + 209^2 .

It is an emirp because it is prime and its reverse (731191) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191137 is a prime.

It is equal to p₁₇₂₅₇ and since 191137 and 17257 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (191237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95568 + 95569.

It is an arithmetic number, because the mean of its divisors is an integer number (95569).

2¹⁹¹¹³⁷ is an apocalyptic number.

It is an amenable number.

191137 is a deficient number, since it is larger than the sum of its proper divisors (1).

191137 is an equidigital number, since it uses as much as digits as its factorization.

191137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189, while the sum is 22.

The square root of 191137 is about 437.1921774232. The cubic root of 191137 is about 57.6034181678.

It can be divided in two parts, 1911 and 37, that multiplied together give a palindrome (70707).

The spelling of 191137 in words is "one hundred ninety-one thousand, one hundred thirty-seven".