189089191 has 2 divisors, whose sum is σ = 189089192. Its totient is φ = 189089190.

The previous prime is 189089183. The next prime is 189089227. The reversal of 189089191 is 191980981.

189089191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189089191 - 2³ = 189089183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189089891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94544595 + 94544596.

It is an arithmetic number, because the mean of its divisors is an integer number (94544596).

Almost surely, 2^189089191 is an apocalyptic number.

189089191 is a deficient number, since it is larger than the sum of its proper divisors (1).

189089191 is an equidigital number, since it uses as much as digits as its factorization.

189089191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 46.

The square root of 189089191 is about 13750.9705475650. The cubic root of 189089191 is about 573.9696137807.

The spelling of 189089191 in words is "one hundred eighty-nine million, eighty-nine thousand, one hundred ninety-one".