19128863458093 has 2 divisors, whose sum is σ = 19128863458094. Its totient is φ = 19128863458092.

The previous prime is 19128863458051. The next prime is 19128863458139. The reversal of 19128863458093 is 39085436882191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19040638419364 + 88225038729 = 4363558^2 + 297027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19128863458093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19128863458013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9564431729046 + 9564431729047.

It is an arithmetic number, because the mean of its divisors is an integer number (9564431729047).

Almost surely, 2^{19128863458093} is an apocalyptic number.

It is an amenable number.

19128863458093 is a deficient number, since it is larger than the sum of its proper divisors (1).

19128863458093 is an equidigital number, since it uses as much as digits as its factorization.

19128863458093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 89579520, while the sum is 67.

The spelling of 19128863458093 in words is "nineteen trillion, one hundred twenty-eight billion, eight hundred sixty-three million, four hundred fifty-eight thousand, ninety-three".