189539003 has 4 divisors (see below), whose sum is σ = 199514760. Its totient is φ = 179563248.

The previous prime is 189538963. The next prime is 189539011. The reversal of 189539003 is 300935981.

189539003 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: 300935981 = 137 ⋅2196613.

It is a cyclic number.

It is not a de Polignac number, because 189539003 - 2⁸ = 189538747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189539033) 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, 4987850 + ... + 4987887.

It is an arithmetic number, because the mean of its divisors is an integer number (49878690).

Almost surely, 2^189539003 is an apocalyptic number.

189539003 is a deficient number, since it is larger than the sum of its proper divisors (9975757).

189539003 is an equidigital number, since it uses as much as digits as its factorization.

189539003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9975756.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 189539003 is about 13767.3164778035. The cubic root of 189539003 is about 574.4243797166.

The spelling of 189539003 in words is "one hundred eighty-nine million, five hundred thirty-nine thousand, three".