2216945279 has 2 divisors, whose sum is σ = 2216945280. Its totient is φ = 2216945278.

The previous prime is 2216945267. The next prime is 2216945363. The reversal of 2216945279 is 9725496122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2216945279 - 2²⁰ = 2215896703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2216945219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1108472639 + 1108472640.

It is an arithmetic number, because the mean of its divisors is an integer number (1108472640).

Almost surely, 2^2216945279 is an apocalyptic number.

2216945279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216945279 is an equidigital number, since it uses as much as digits as its factorization.

2216945279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 2216945279 is about 47084.4483773570. The cubic root of 2216945279 is about 1303.9221349917.

The spelling of 2216945279 in words is "two billion, two hundred sixteen million, nine hundred forty-five thousand, two hundred seventy-nine".