2218815 has 12 divisors (see below), whose sum is σ = 3846024. Its totient is φ = 1183344.

The previous prime is 2218807. The next prime is 2218831. The reversal of 2218815 is 5188122.

It is not a de Polignac number, because 2218815 - 2³ = 2218807 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24609 + ... + 24698.

It is an arithmetic number, because the mean of its divisors is an integer number (320502).

2^2218815 is an apocalyptic number.

2218815 is a deficient number, since it is larger than the sum of its proper divisors (1627209).

2218815 is a wasteful number, since it uses less digits than its factorization.

2218815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49318 (or 49315 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 2218815 is about 1489.5687295321. The cubic root of 2218815 is about 130.4288598035.

The spelling of 2218815 in words is "two million, two hundred eighteen thousand, eight hundred fifteen".