422766191 has 2 divisors, whose sum is σ = 422766192. Its totient is φ = 422766190.

The previous prime is 422766167. The next prime is 422766241. The reversal of 422766191 is 191667224.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 422766191 - 2¹⁴ = 422749807 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422766101) 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, 211383095 + 211383096.

It is an arithmetic number, because the mean of its divisors is an integer number (211383096).

Almost surely, 2^422766191 is an apocalyptic number.

422766191 is a deficient number, since it is larger than the sum of its proper divisors (1).

422766191 is an equidigital number, since it uses as much as digits as its factorization.

422766191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 38.

The square root of 422766191 is about 20561.2789242304. The cubic root of 422766191 is about 750.5277417496.

The spelling of 422766191 in words is "four hundred twenty-two million, seven hundred sixty-six thousand, one hundred ninety-one".