189038089 has 4 divisors (see below), whose sum is σ = 193060224. Its totient is φ = 185015956.

The previous prime is 189038071. The next prime is 189038107. The reversal of 189038089 is 980830981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 980830981 = 13 ⋅75448537.

It is an interprime number because it is at equal distance from previous prime (189038071) and next prime (189038107).

It is a cyclic number.

It is not a de Polignac number, because 189038089 - 2¹⁵ = 189005321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189038009) 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 in 3 ways as a sum of consecutive naturals, for example, 2010997 + ... + 2011090.

It is an arithmetic number, because the mean of its divisors is an integer number (48265056).

Almost surely, 2^189038089 is an apocalyptic number.

It is an amenable number.

189038089 is a deficient number, since it is larger than the sum of its proper divisors (4022135).

189038089 is an equidigital number, since it uses as much as digits as its factorization.

189038089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4022134.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 189038089 is about 13749.1122986177. The cubic root of 189038089 is about 573.9179033723.

The spelling of 189038089 in words is "one hundred eighty-nine million, thirty-eight thousand, eighty-nine".