2218589 has 4 divisors (see below), whose sum is σ = 2227680. Its totient is φ = 2209500.

The previous prime is 2218583. The next prime is 2218597. The reversal of 2218589 is 9858122.

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 2218589 - 2¹² = 2214493 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 (2218583) 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, 4169 + ... + 4670.

It is an arithmetic number, because the mean of its divisors is an integer number (556920).

2^2218589 is an apocalyptic number.

It is an amenable number.

2218589 is a deficient number, since it is larger than the sum of its proper divisors (9091).

2218589 is an equidigital number, since it uses as much as digits as its factorization.

2218589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9090.

The product of its digits is 11520, while the sum is 35.

The square root of 2218589 is about 1489.4928667167. The cubic root of 2218589 is about 130.4244313251.

The spelling of 2218589 in words is "two million, two hundred eighteen thousand, five hundred eighty-nine".