2216344388 has 12 divisors (see below), whose sum is σ = 3889592700. Its totient is φ = 1105032192.

The previous prime is 2216344387. The next prime is 2216344397. The reversal of 2216344388 is 8834436122.

It can be written as a sum of positive squares in 2 ways, for example, as 667292224 + 1549052164 = 25832^2 + 39358^2 .

It is not an unprimeable number, because it can be changed into a prime (2216344387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783413 + ... + 786236.

It is an arithmetic number, because the mean of its divisors is an integer number (324132725).

Almost surely, 2^2216344388 is an apocalyptic number.

It is an amenable number.

2216344388 is a deficient number, since it is larger than the sum of its proper divisors (1673248312).

2216344388 is a wasteful number, since it uses less digits than its factorization.

2216344388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570006 (or 1570004 counting only the distinct ones).

The product of its digits is 221184, while the sum is 41.

The square root of 2216344388 is about 47078.0669526692. The cubic root of 2216344388 is about 1303.8043173377.

The spelling of 2216344388 in words is "two billion, two hundred sixteen million, three hundred forty-four thousand, three hundred eighty-eight".