4221845791 has 2 divisors, whose sum is σ = 4221845792. Its totient is φ = 4221845790.

The previous prime is 4221845783. The next prime is 4221845819. The reversal of 4221845791 is 1975481224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4221845791 - 2³ = 4221845783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4221845711) 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, 2110922895 + 2110922896.

It is an arithmetic number, because the mean of its divisors is an integer number (2110922896).

Almost surely, 2^4221845791 is an apocalyptic number.

4221845791 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221845791 is an equidigital number, since it uses as much as digits as its factorization.

4221845791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The square root of 4221845791 is about 64975.7323236914. The cubic root of 4221845791 is about 1616.2211611533.

The spelling of 4221845791 in words is "four billion, two hundred twenty-one million, eight hundred forty-five thousand, seven hundred ninety-one".