2218018 has 16 divisors (see below), whose sum is σ = 3719520. Its totient is φ = 983200.

The previous prime is 2218001. The next prime is 2218037. The reversal of 2218018 is 8108122.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a self number, because there is not a number n which added to its sum of digits gives 2218018.

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, 328 + ... + 2131.

It is an arithmetic number, because the mean of its divisors is an integer number (232470).

2^2218018 is an apocalyptic number.

2218018 is a deficient number, since it is larger than the sum of its proper divisors (1501502).

2218018 is a wasteful number, since it uses less digits than its factorization.

2218018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2513.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 2218018 is about 1489.3011784055. The cubic root of 2218018 is about 130.4132412188.

The spelling of 2218018 in words is "two million, two hundred eighteen thousand, eighteen".