2218812938 has 32 divisors (see below), whose sum is σ = 3426192000. Its totient is φ = 1077385536.

The previous prime is 2218812931. The next prime is 2218812979. The reversal of 2218812938 is 8392188122.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2218812931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2695595 + ... + 2696417.

It is an arithmetic number, because the mean of its divisors is an integer number (107068500).

Almost surely, 2^2218812938 is an apocalyptic number.

2218812938 is a deficient number, since it is larger than the sum of its proper divisors (1207379062).

2218812938 is a wasteful number, since it uses less digits than its factorization.

2218812938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166.

The product of its digits is 110592, while the sum is 44.

The square root of 2218812938 is about 47104.2772792450. The cubic root of 2218812938 is about 1304.2881939992.

The spelling of 2218812938 in words is "two billion, two hundred eighteen million, eight hundred twelve thousand, nine hundred thirty-eight".