188489 has 4 divisors (see below), whose sum is σ = 215424. Its totient is φ = 161556.

The previous prime is 188483. The next prime is 188491. The reversal of 188489 is 984881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 188489 - 2⁴ = 188473 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 (188483) by changing a digit.

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, 13457 + ... + 13470.

It is an arithmetic number, because the mean of its divisors is an integer number (53856).

2¹⁸⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

188489 is a deficient number, since it is larger than the sum of its proper divisors (26935).

188489 is an equidigital number, since it uses as much as digits as its factorization.

188489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26934.

The product of its digits is 18432, while the sum is 38.

The square root of 188489 is about 434.1531987674. The cubic root of 188489 is about 57.3361688099.

The spelling of 188489 in words is "one hundred eighty-eight thousand, four hundred eighty-nine".