2218118 has 16 divisors (see below), whose sum is σ = 3884544. Its totient is φ = 930120.

The previous prime is 2218093. The next prime is 2218121. The reversal of 2218118 is 8118122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2218093 and 2218102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1028 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (242784).

2^2218118 is an apocalyptic number.

2218118 is a deficient number, since it is larger than the sum of its proper divisors (1666426).

2218118 is a wasteful number, since it uses less digits than its factorization.

2218118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3427.

The product of its digits is 256, while the sum is 23.

The square root of 2218118 is about 1489.3347508200. The cubic root of 2218118 is about 130.4152010959.

The spelling of 2218118 in words is "two million, two hundred eighteen thousand, one hundred eighteen".