19338780211 has 2 divisors, whose sum is σ = 19338780212. Its totient is φ = 19338780210.

The previous prime is 19338780191. The next prime is 19338780233. The reversal of 19338780211 is 11208783391.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19338780211 - 2¹¹ = 19338778163 is a prime.

It is not a weakly prime, because it can be changed into another prime (19338780511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9669390105 + 9669390106.

It is an arithmetic number, because the mean of its divisors is an integer number (9669390106).

Almost surely, 2^19338780211 is an apocalyptic number.

19338780211 is a deficient number, since it is larger than the sum of its proper divisors (1).

19338780211 is an equidigital number, since it uses as much as digits as its factorization.

19338780211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 19338780211 in words is "nineteen billion, three hundred thirty-eight million, seven hundred eighty thousand, two hundred eleven".