2189218 has 16 divisors (see below), whose sum is σ = 3525120. Its totient is φ = 1016496.

The previous prime is 2189207. The next prime is 2189219. The reversal of 2189218 is 8129812.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2189218.

It is not an unprimeable number, because it can be changed into a prime (2189219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1471 + ... + 2557.

It is an arithmetic number, because the mean of its divisors is an integer number (220320).

2^2189218 is an apocalyptic number.

2189218 is a deficient number, since it is larger than the sum of its proper divisors (1335902).

2189218 is a wasteful number, since it uses less digits than its factorization.

2189218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161.

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

The square root of 2189218 is about 1479.6006217895. The cubic root of 2189218 is about 129.8463272912.

The spelling of 2189218 in words is "two million, one hundred eighty-nine thousand, two hundred eighteen".