189671 has 2 divisors, whose sum is σ = 189672. Its totient is φ = 189670.

The previous prime is 189661. The next prime is 189691. The reversal of 189671 is 176981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189671 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94835 + 94836.

It is an arithmetic number, because the mean of its divisors is an integer number (94836).

2¹⁸⁹⁶⁷¹ is an apocalyptic number.

189671 is a deficient number, since it is larger than the sum of its proper divisors (1).

189671 is an equidigital number, since it uses as much as digits as its factorization.

189671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 32.

The square root of 189671 is about 435.5123419606. The cubic root of 189671 is about 57.4557693879.

The spelling of 189671 in words is "one hundred eighty-nine thousand, six hundred seventy-one".