2218910018 has 32 divisors (see below), whose sum is σ = 3613063104. Its totient is φ = 1015958592.

The previous prime is 2218910009. The next prime is 2218910021. The reversal of 2218910018 is 8100198122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2342621 + ... + 2343567.

It is an arithmetic number, because the mean of its divisors is an integer number (112908222).

Almost surely, 2^2218910018 is an apocalyptic number.

2218910018 is a deficient number, since it is larger than the sum of its proper divisors (1394153086).

2218910018 is a wasteful number, since it uses less digits than its factorization.

2218910018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1586.

The product of its (nonzero) digits is 2304, while the sum is 32.

The square root of 2218910018 is about 47105.3077476413. The cubic root of 2218910018 is about 1304.3072159499.

The spelling of 2218910018 in words is "two billion, two hundred eighteen million, nine hundred ten thousand, eighteen".