189563 has 8 divisors (see below), whose sum is σ = 217920. Its totient is φ = 163080.

The previous prime is 189559. The next prime is 189583. The reversal of 189563 is 365981.

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

It is a cyclic number.

It is not a de Polignac number, because 189563 - 2² = 189559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245 + ... + 662.

It is an arithmetic number, because the mean of its divisors is an integer number (27240).

2¹⁸⁹⁵⁶³ is an apocalyptic number.

189563 is a deficient number, since it is larger than the sum of its proper divisors (28357).

189563 is a wasteful number, since it uses less digits than its factorization.

189563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937.

The product of its digits is 6480, while the sum is 32.

The square root of 189563 is about 435.3883324114. The cubic root of 189563 is about 57.4448620779. Note that the first 3 decimals are identical.

The spelling of 189563 in words is "one hundred eighty-nine thousand, five hundred sixty-three".