2218831980 has 48 divisors (see below), whose sum is σ = 6257448960. Its totient is φ = 587429568.

The previous prime is 2218831969. The next prime is 2218832023. The reversal of 2218831980 is 891388122.

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, 124684 + ... + 141363.

It is an arithmetic number, because the mean of its divisors is an integer number (130363520).

Almost surely, 2^2218831980 is an apocalyptic number.

2218831980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2218831980 is an abundant number, since it is smaller than the sum of its proper divisors (4038616980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2218831980 is a wasteful number, since it uses less digits than its factorization.

2218831980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266198 (or 266196 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 2218831980 is about 47104.4794048294. The cubic root of 2218831980 is about 1304.2919251511.

The spelling of 2218831980 in words is "two billion, two hundred eighteen million, eight hundred thirty-one thousand, nine hundred eighty".