2128189 has 8 divisors (see below), whose sum is σ = 2473920. Its totient is φ = 1792896.

The previous prime is 2128183. The next prime is 2128201. The reversal of 2128189 is 9818212.

It is a happy number.

2128189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2128189 - 2⁵ = 2128157 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2128189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128183) 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, 2164 + ... + 2989.

It is an arithmetic number, because the mean of its divisors is an integer number (309240).

2^2128189 is an apocalyptic number.

It is an amenable number.

2128189 is a deficient number, since it is larger than the sum of its proper divisors (345731).

2128189 is an equidigital number, since it uses as much as digits as its factorization.

2128189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5219.

The product of its digits is 2304, while the sum is 31.

The square root of 2128189 is about 1458.8313816202. The cubic root of 2128189 is about 128.6283596786.

The spelling of 2128189 in words is "two million, one hundred twenty-eight thousand, one hundred eighty-nine".