189506 has 8 divisors (see below), whose sum is σ = 299280. Its totient is φ = 89748.

The previous prime is 189493. The next prime is 189509. The reversal of 189506 is 605981.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (189509) by changing a digit.

189506 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2456 + ... + 2531.

It is an arithmetic number, because the mean of its divisors is an integer number (37410).

2¹⁸⁹⁵⁰⁶ is an apocalyptic number.

189506 is a deficient number, since it is larger than the sum of its proper divisors (109774).

189506 is a wasteful number, since it uses less digits than its factorization.

189506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 189506 is about 435.3228686848. The cubic root of 189506 is about 57.4391037717.

The spelling of 189506 in words is "one hundred eighty-nine thousand, five hundred six".