2216182865 has 16 divisors (see below), whose sum is σ = 2865047808. Its totient is φ = 1635961536.

The previous prime is 2216182861. The next prime is 2216182867. The reversal of 2216182865 is 5682816122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2216182865 - 2² = 2216182861 is a prime.

It is a super-2 number, since 2×2216182865² = 9822932982239216450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2216182861) 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, 251972 + ... + 260618.

It is an arithmetic number, because the mean of its divisors is an integer number (179065488).

Almost surely, 2^2216182865 is an apocalyptic number.

It is an amenable number.

2216182865 is a deficient number, since it is larger than the sum of its proper divisors (648864943).

2216182865 is a wasteful number, since it uses less digits than its factorization.

2216182865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12608.

The product of its digits is 92160, while the sum is 41.

The square root of 2216182865 is about 47076.3514410367. The cubic root of 2216182865 is about 1303.7726436348.

Adding to 2216182865 its reverse (5682816122), we get a palindrome (7898998987).

The spelling of 2216182865 in words is "two billion, two hundred sixteen million, one hundred eighty-two thousand, eight hundred sixty-five".