4221764837 has 2 divisors, whose sum is σ = 4221764838. Its totient is φ = 4221764836.

The previous prime is 4221764821. The next prime is 4221764849. The reversal of 4221764837 is 7384671224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4219931521 + 1833316 = 64961^2 + 1354^2 .

It is a cyclic number.

It is not a de Polignac number, because 4221764837 - 2⁴ = 4221764821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4221763837) 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, 2110882418 + 2110882419.

It is an arithmetic number, because the mean of its divisors is an integer number (2110882419).

Almost surely, 2^4221764837 is an apocalyptic number.

It is an amenable number.

4221764837 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221764837 is an equidigital number, since it uses as much as digits as its factorization.

4221764837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 44.

The square root of 4221764837 is about 64975.1093650484. The cubic root of 4221764837 is about 1616.2108307267.

The spelling of 4221764837 in words is "four billion, two hundred twenty-one million, seven hundred sixty-four thousand, eight hundred thirty-seven".