19788271141 has 2 divisors, whose sum is σ = 19788271142. Its totient is φ = 19788271140.

The previous prime is 19788271123. The next prime is 19788271159. The reversal of 19788271141 is 14117288791.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (19788271123) and next prime (19788271159).

It can be written as a sum of positive squares in only one way, i.e., 12111882916 + 7676388225 = 110054^2 + 87615^2 .

It is an emirp because it is prime and its reverse (14117288791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19788271141 - 2²¹ = 19786173989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19788271241) 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, 9894135570 + 9894135571.

It is an arithmetic number, because the mean of its divisors is an integer number (9894135571).

Almost surely, 2^19788271141 is an apocalyptic number.

It is an amenable number.

19788271141 is a deficient number, since it is larger than the sum of its proper divisors (1).

19788271141 is an equidigital number, since it uses as much as digits as its factorization.

19788271141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 49.

The spelling of 19788271141 in words is "nineteen billion, seven hundred eighty-eight million, two hundred seventy-one thousand, one hundred forty-one".