189545 has 8 divisors (see below), whose sum is σ = 229824. Its totient is φ = 150064.

The previous prime is 189529. The next prime is 189547. The reversal of 189545 is 545981.

189545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189545 - 2⁴ = 189529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722 + ... + 948.

It is an arithmetic number, because the mean of its divisors is an integer number (28728).

2¹⁸⁹⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

189545 is a deficient number, since it is larger than the sum of its proper divisors (40279).

189545 is a wasteful number, since it uses less digits than its factorization.

189545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399.

The product of its digits is 7200, while the sum is 32.

The square root of 189545 is about 435.3676607191. The cubic root of 189545 is about 57.4430437901.

The spelling of 189545 in words is "one hundred eighty-nine thousand, five hundred forty-five".