6442220419 has 2 divisors, whose sum is σ = 6442220420. Its totient is φ = 6442220418.

The previous prime is 6442220333. The next prime is 6442220423. The reversal of 6442220419 is 9140222446.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6442220419 is a prime.

It is a super-2 number, since 2×6442220419² = 83004407853961071122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6442220219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3221110209 + 3221110210.

It is an arithmetic number, because the mean of its divisors is an integer number (3221110210).

Almost surely, 2^6442220419 is an apocalyptic number.

6442220419 is a deficient number, since it is larger than the sum of its proper divisors (1).

6442220419 is an equidigital number, since it uses as much as digits as its factorization.

6442220419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 6442220419 is about 80263.4438521049. The cubic root of 6442220419 is about 1860.7092931132.

The spelling of 6442220419 in words is "six billion, four hundred forty-two million, two hundred twenty thousand, four hundred nineteen".