189843 has 4 divisors (see below), whose sum is σ = 253128. Its totient is φ = 126560.

The previous prime is 189823. The next prime is 189851. The reversal of 189843 is 348981.

189843 is nontrivially palindromic in base 15.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189843 - 2¹² = 185747 is a prime.

It is a D-number.

189843 is an undulating number in base 15.

It is not an unprimeable number, because it can be changed into a prime (189823) 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, 31638 + ... + 31643.

It is an arithmetic number, because the mean of its divisors is an integer number (63282).

2¹⁸⁹⁸⁴³ is an apocalyptic number.

189843 is a deficient number, since it is larger than the sum of its proper divisors (63285).

189843 is an equidigital number, since it uses as much as digits as its factorization.

189843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63284.

The product of its digits is 6912, while the sum is 33.

The square root of 189843 is about 435.7097657845. The cubic root of 189843 is about 57.4731317445.

The spelling of 189843 in words is "one hundred eighty-nine thousand, eight hundred forty-three".