189549 has 6 divisors (see below), whose sum is σ = 273806. Its totient is φ = 126360.

The previous prime is 189547. The next prime is 189559. The reversal of 189549 is 945981.

It can be written as a sum of positive squares in only one way, i.e., 189225 + 324 = 435^2 + 18^2 .

It is not a de Polignac number, because 189549 - 2¹ = 189547 is a prime.

It is a Duffinian number.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 10522 + ... + 10539.

2¹⁸⁹⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

189549 is a deficient number, since it is larger than the sum of its proper divisors (84257).

189549 is a wasteful number, since it uses less digits than its factorization.

189549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21067 (or 21064 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 189549 is about 435.3722545133. The cubic root of 189549 is about 57.4434478640.

The spelling of 189549 in words is "one hundred eighty-nine thousand, five hundred forty-nine".