189558 has 12 divisors (see below), whose sum is σ = 410748. Its totient is φ = 63180.

The previous prime is 189547. The next prime is 189559. The reversal of 189558 is 855981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189559) 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, 5248 + ... + 5283.

It is an arithmetic number, because the mean of its divisors is an integer number (34229).

2¹⁸⁹⁵⁵⁸ is an apocalyptic number.

189558 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

189558 is an abundant number, since it is smaller than the sum of its proper divisors (221190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189558 is a wasteful number, since it uses less digits than its factorization.

189558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10539 (or 10536 counting only the distinct ones).

The product of its digits is 14400, while the sum is 36.

The square root of 189558 is about 435.3825903731. The cubic root of 189558 is about 57.4443570095. Note that the first 3 decimals are identical.

It can be divided in two parts, 1895 and 58, that added together give a triangular number (1953 = T₆₂).

The spelling of 189558 in words is "one hundred eighty-nine thousand, five hundred fifty-eight".