19229349917 has 2 divisors, whose sum is σ = 19229349918. Its totient is φ = 19229349916.

The previous prime is 19229349833. The next prime is 19229349929. The reversal of 19229349917 is 71994392291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18908725081 + 320624836 = 137509^2 + 17906^2 .

It is an emirp because it is prime and its reverse (71994392291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19229349917 - 2¹⁴ = 19229333533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19229349317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9614674958 + 9614674959.

It is an arithmetic number, because the mean of its divisors is an integer number (9614674959).

Almost surely, 2^19229349917 is an apocalyptic number.

It is an amenable number.

19229349917 is a deficient number, since it is larger than the sum of its proper divisors (1).

19229349917 is an equidigital number, since it uses as much as digits as its factorization.

19229349917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 56.

The spelling of 19229349917 in words is "nineteen billion, two hundred twenty-nine million, three hundred forty-nine thousand, nine hundred seventeen".