2218280616 has 48 divisors (see below), whose sum is σ = 6106344660. Its totient is φ = 727303680.

The previous prime is 2218280611. The next prime is 2218280639. The reversal of 2218280616 is 6160828122.

2218280616 is a `hidden beast` number, since 2 + 2 + 18 + 28 + 0 + 616 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1332980100 + 885300516 = 36510^2 + 29754^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (2218280611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248145 + ... + 256928.

Almost surely, 2^2218280616 is an apocalyptic number.

It is an amenable number.

2218280616 is an abundant number, since it is smaller than the sum of its proper divisors (3888064044).

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

2218280616 is a wasteful number, since it uses less digits than its factorization.

2218280616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505146 (or 505139 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 2218280616 is about 47098.6264767880. The cubic root of 2218280616 is about 1304.1838804389.

The spelling of 2218280616 in words is "two billion, two hundred eighteen million, two hundred eighty thousand, six hundred sixteen".