189538 has 8 divisors (see below), whose sum is σ = 287532. Its totient is φ = 93696.

The previous prime is 189529. The next prime is 189547. The reversal of 189538 is 835981.

It is an interprime number because it is at equal distance from previous prime (189529) and next prime (189547).

It can be written as a sum of positive squares in 2 ways, for example, as 178929 + 10609 = 423^2 + 103^2 .

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

It is an unprimeable number.

189538 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295 + ... + 682.

2¹⁸⁹⁵³⁸ is an apocalyptic number.

189538 is a deficient number, since it is larger than the sum of its proper divisors (97994).

189538 is an equidigital number, since it uses as much as digits as its factorization.

189538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076.

The product of its digits is 8640, while the sum is 34.

The square root of 189538 is about 435.3596214625. The cubic root of 189538 is about 57.4423366471.

It can be divided in two parts, 1895 and 38, that multiplied together give a triangular number (72010 = T₃₇₉).

The spelling of 189538 in words is "one hundred eighty-nine thousand, five hundred thirty-eight".