2221843679 has 16 divisors (see below), whose sum is σ = 2701486080. Its totient is φ = 1800984960.

The previous prime is 2221843667. The next prime is 2221843681. The reversal of 2221843679 is 9763481222.

It is a cyclic number.

It is not a de Polignac number, because 2221843679 - 2²⁴ = 2205066463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221843649) 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 in 15 ways as a sum of consecutive naturals, for example, 309119 + ... + 316224.

It is an arithmetic number, because the mean of its divisors is an integer number (168842880).

Almost surely, 2^2221843679 is an apocalyptic number.

2221843679 is a deficient number, since it is larger than the sum of its proper divisors (479642401).

2221843679 is a wasteful number, since it uses less digits than its factorization.

2221843679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625390.

The product of its digits is 290304, while the sum is 44.

The square root of 2221843679 is about 47136.4368509118. The cubic root of 2221843679 is about 1304.8817788513.

The spelling of 2221843679 in words is "two billion, two hundred twenty-one million, eight hundred forty-three thousand, six hundred seventy-nine".