189711671 has 2 divisors, whose sum is σ = 189711672. Its totient is φ = 189711670.

The previous prime is 189711623. The next prime is 189711679. The reversal of 189711671 is 176117981.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189711671 is a prime.

It is a super-2 number, since 2×189711671² = 71981036227224482, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189711679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94855835 + 94855836.

It is an arithmetic number, because the mean of its divisors is an integer number (94855836).

Almost surely, 2^189711671 is an apocalyptic number.

189711671 is a deficient number, since it is larger than the sum of its proper divisors (1).

189711671 is an equidigital number, since it uses as much as digits as its factorization.

189711671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 41.

The square root of 189711671 is about 13773.5859891315. The cubic root of 189711671 is about 574.5987582592.

The spelling of 189711671 in words is "one hundred eighty-nine million, seven hundred eleven thousand, six hundred seventy-one".