2188589 has 4 divisors (see below), whose sum is σ = 2356956. Its totient is φ = 2020224.

The previous prime is 2188583. The next prime is 2188607. The reversal of 2188589 is 9858812.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1247689 + 940900 = 1117^2 + 970^2 .

It is a cyclic number.

It is not a de Polignac number, because 2188589 - 2¹⁶ = 2123053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2188583) 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, 84164 + ... + 84189.

It is an arithmetic number, because the mean of its divisors is an integer number (589239).

2^2188589 is an apocalyptic number.

It is an amenable number.

2188589 is a deficient number, since it is larger than the sum of its proper divisors (168367).

2188589 is a wasteful number, since it uses less digits than its factorization.

2188589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168366.

The product of its digits is 46080, while the sum is 41.

The square root of 2188589 is about 1479.3880491609. The cubic root of 2188589 is about 129.8338904053.

The spelling of 2188589 in words is "two million, one hundred eighty-eight thousand, five hundred eighty-nine".