189134089 has 4 divisors (see below), whose sum is σ = 190807956. Its totient is φ = 187460224.

The previous prime is 189134053. The next prime is 189134119. The reversal of 189134089 is 980431981.

189134089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 980431981 = 12161 ⋅80621.

It can be written as a sum of positive squares in 2 ways, for example, as 97357689 + 91776400 = 9867^2 + 9580^2 .

It is a cyclic number.

It is not a de Polignac number, because 189134089 - 2²¹ = 187036937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189134039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 836764 + ... + 836989.

It is an arithmetic number, because the mean of its divisors is an integer number (47701989).

Almost surely, 2^189134089 is an apocalyptic number.

It is an amenable number.

189134089 is a deficient number, since it is larger than the sum of its proper divisors (1673867).

189134089 is a wasteful number, since it uses less digits than its factorization.

189134089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673866.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 189134089 is about 13752.6029899798. The cubic root of 189134089 is about 574.0150386377.

The spelling of 189134089 in words is "one hundred eighty-nine million, one hundred thirty-four thousand, eighty-nine".