189003 has 6 divisors (see below), whose sum is σ = 253012. Its totient is φ = 125500.

The previous prime is 188999. The next prime is 189011. The reversal of 189003 is 300981.

189003 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189003 - 2² = 188999 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 628 + ... + 878.

2¹⁸⁹⁰⁰³ is an apocalyptic number.

189003 is a deficient number, since it is larger than the sum of its proper divisors (64009).

189003 is an frugal number, since it uses more digits than its factorization.

189003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 189003 is about 434.7447526998. The cubic root of 189003 is about 57.3882391214.

Adding to 189003 its reverse (300981), we get a palindrome (489984).

The spelling of 189003 in words is "one hundred eighty-nine thousand, three".