189006871 has 2 divisors, whose sum is σ = 189006872. Its totient is φ = 189006870.

The previous prime is 189006863. The next prime is 189006929. The reversal of 189006871 is 178600981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189006871 - 2³ = 189006863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189006821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94503435 + 94503436.

It is an arithmetic number, because the mean of its divisors is an integer number (94503436).

Almost surely, 2^189006871 is an apocalyptic number.

189006871 is a deficient number, since it is larger than the sum of its proper divisors (1).

189006871 is an equidigital number, since it uses as much as digits as its factorization.

189006871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 189006871 is about 13747.9769784503. The cubic root of 189006871 is about 573.8863091126.

The spelling of 189006871 in words is "one hundred eighty-nine million, six thousand, eight hundred seventy-one".