189419089 has 2 divisors, whose sum is σ = 189419090. Its totient is φ = 189419088.

The previous prime is 189419063. The next prime is 189419101. The reversal of 189419089 is 980914981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134954689 + 54464400 = 11617^2 + 7380^2 .

It is a cyclic number.

It is not a de Polignac number, because 189419089 - 2²⁷ = 55201361 is a prime.

It is not a weakly prime, because it can be changed into another prime (189419029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94709544 + 94709545.

It is an arithmetic number, because the mean of its divisors is an integer number (94709545).

Almost surely, 2^189419089 is an apocalyptic number.

It is an amenable number.

189419089 is a deficient number, since it is larger than the sum of its proper divisors (1).

189419089 is an equidigital number, since it uses as much as digits as its factorization.

189419089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 49.

The square root of 189419089 is about 13762.9607643123. The cubic root of 189419089 is about 574.3032154614.

The spelling of 189419089 in words is "one hundred eighty-nine million, four hundred nineteen thousand, eighty-nine".