189874 has 8 divisors (see below), whose sum is σ = 287280. Its totient is φ = 94116.

The previous prime is 189859. The next prime is 189877. The reversal of 189874 is 478981.

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (189877) 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, 64 + ... + 619.

It is an arithmetic number, because the mean of its divisors is an integer number (35910).

2¹⁸⁹⁸⁷⁴ is an apocalyptic number.

189874 is a deficient number, since it is larger than the sum of its proper divisors (97406).

189874 is a wasteful number, since it uses less digits than its factorization.

189874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824.

The product of its digits is 16128, while the sum is 37.

The square root of 189874 is about 435.7453384719. The cubic root of 189874 is about 57.4762598910.

The spelling of 189874 in words is "one hundred eighty-nine thousand, eight hundred seventy-four".