189023 has 4 divisors (see below), whose sum is σ = 200160. Its totient is φ = 177888.

The previous prime is 189019. The next prime is 189041. The reversal of 189023 is 320981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320981 = 73 ⋅4397.

It is not a de Polignac number, because 189023 - 2² = 189019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5543 + ... + 5576.

It is an arithmetic number, because the mean of its divisors is an integer number (50040).

2¹⁸⁹⁰²³ is an apocalyptic number.

189023 is a deficient number, since it is larger than the sum of its proper divisors (11137).

189023 is a wasteful number, since it uses less digits than its factorization.

189023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11136.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 189023 is about 434.7677540941. The cubic root of 189023 is about 57.3902632944.

The spelling of 189023 in words is "one hundred eighty-nine thousand, twenty-three".