219326850109 has 2 divisors, whose sum is σ = 219326850110. Its totient is φ = 219326850108.

The previous prime is 219326850107. The next prime is 219326850121. The reversal of 219326850109 is 901058623912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192470851225 + 26855998884 = 438715^2 + 163878^2 .

It is a cyclic number.

It is not a de Polignac number, because 219326850109 - 2¹ = 219326850107 is a prime.

Together with 219326850107, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219326850107) 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, 109663425054 + 109663425055.

It is an arithmetic number, because the mean of its divisors is an integer number (109663425055).

Almost surely, 2^219326850109 is an apocalyptic number.

It is an amenable number.

219326850109 is a deficient number, since it is larger than the sum of its proper divisors (1).

219326850109 is an equidigital number, since it uses as much as digits as its factorization.

219326850109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 219326850109 in words is "two hundred nineteen billion, three hundred twenty-six million, eight hundred fifty thousand, one hundred nine".