219209071619 has 2 divisors, whose sum is σ = 219209071620. Its totient is φ = 219209071618.

The previous prime is 219209071579. The next prime is 219209071661. The reversal of 219209071619 is 916170902912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 219209071619 - 2⁸ = 219209071363 is a prime.

It is a super-2 number, since 2×219209071619² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (219209071219) 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, 109604535809 + 109604535810.

It is an arithmetic number, because the mean of its divisors is an integer number (109604535810).

Almost surely, 2^219209071619 is an apocalyptic number.

219209071619 is a deficient number, since it is larger than the sum of its proper divisors (1).

219209071619 is an equidigital number, since it uses as much as digits as its factorization.

219209071619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 47.

The spelling of 219209071619 in words is "two hundred nineteen billion, two hundred nine million, seventy-one thousand, six hundred nineteen".