189974 has 12 divisors (see below), whose sum is σ = 297924. Its totient is φ = 90804.

The previous prime is 189967. The next prime is 189977. The reversal of 189974 is 479981.

189974 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189977) 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, 4019 + ... + 4065.

It is an arithmetic number, because the mean of its divisors is an integer number (24827).

2¹⁸⁹⁹⁷⁴ is an apocalyptic number.

189974 is a deficient number, since it is larger than the sum of its proper divisors (107950).

189974 is an equidigital number, since it uses as much as digits as its factorization.

189974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 92 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 189974 is about 435.8600692883. The cubic root of 189974 is about 57.4863483659.

The spelling of 189974 in words is "one hundred eighty-nine thousand, nine hundred seventy-four".