192191 has 2 divisors, whose sum is σ = 192192. Its totient is φ = 192190.

The previous prime is 192187. The next prime is 192193. The reversal of 192191 is 191291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 192191 - 2² = 192187 is a prime.

It is a Sophie Germain prime.

Together with 192193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (192193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96095 + 96096.

It is an arithmetic number, because the mean of its divisors is an integer number (96096).

2¹⁹²¹⁹¹ is an apocalyptic number.

192191 is a deficient number, since it is larger than the sum of its proper divisors (1).

192191 is an equidigital number, since it uses as much as digits as its factorization.

192191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 162, while the sum is 23.

The square root of 192191 is about 438.3959397622. The cubic root of 192191 is about 57.7091063104.

Subtracting from 192191 its reverse (191291), we obtain a square (900 = 30²).

It can be divided in two parts, 192 and 191, that added together give a palindrome (383).

The spelling of 192191 in words is "one hundred ninety-two thousand, one hundred ninety-one".