641267219 has 2 divisors, whose sum is σ = 641267220. Its totient is φ = 641267218.

The previous prime is 641267093. The next prime is 641267261. The reversal of 641267219 is 912762146.

641267219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-641267219 is a prime.

It is a super-2 number, since 2×641267219² = 822447292327987922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (641263219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320633609 + 320633610.

It is an arithmetic number, because the mean of its divisors is an integer number (320633610).

Almost surely, 2^641267219 is an apocalyptic number.

641267219 is a deficient number, since it is larger than the sum of its proper divisors (1).

641267219 is an equidigital number, since it uses as much as digits as its factorization.

641267219 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 641267219 is about 25323.2545104297. The cubic root of 641267219 is about 862.3422803113.

The spelling of 641267219 in words is "six hundred forty-one million, two hundred sixty-seven thousand, two hundred nineteen".