19099873646669 has 2 divisors, whose sum is σ = 19099873646670. Its totient is φ = 19099873646668.

The previous prime is 19099873646641. The next prime is 19099873646681. The reversal of 19099873646669 is 96664637899091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16820866755625 + 2279006891044 = 4101325^2 + 1509638^2 .

It is an emirp because it is prime and its reverse (96664637899091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19099873646669 - 2¹² = 19099873642573 is a prime.

It is a super-2 number, since 2×19099873646669² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19099873646629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9549936823334 + 9549936823335.

It is an arithmetic number, because the mean of its divisors is an integer number (9549936823335).

Almost surely, 2^{19099873646669} is an apocalyptic number.

It is an amenable number.

19099873646669 is a deficient number, since it is larger than the sum of its proper divisors (1).

19099873646669 is an equidigital number, since it uses as much as digits as its factorization.

19099873646669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5714053632, while the sum is 83.

The spelling of 19099873646669 in words is "nineteen trillion, ninety-nine billion, eight hundred seventy-three million, six hundred forty-six thousand, six hundred sixty-nine".