189688271 has 2 divisors, whose sum is σ = 189688272. Its totient is φ = 189688270.

The previous prime is 189688259. The next prime is 189688319. The reversal of 189688271 is 172886981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189688271 - 2²² = 185493967 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189688211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94844135 + 94844136.

It is an arithmetic number, because the mean of its divisors is an integer number (94844136).

Almost surely, 2^189688271 is an apocalyptic number.

189688271 is a deficient number, since it is larger than the sum of its proper divisors (1).

189688271 is an equidigital number, since it uses as much as digits as its factorization.

189688271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 50.

The square root of 189688271 is about 13772.7365109480. The cubic root of 189688271 is about 574.5751326458.

The spelling of 189688271 in words is "one hundred eighty-nine million, six hundred eighty-eight thousand, two hundred seventy-one".