1.216451 x 10^17
which is
121,645,100,000,000,000
There are 10 whole numbers in 10 to 19.
That would be 1-19. Nineteen numbers
4 and 3 * * * * * 19 is itself a whole number and no whole number can lie between two consecutive whole numbers.
It is: 11 times 19 = 209
The numbers are: 6 and 19
The two numbers are 19 and 7. 19 + 7 = 26, and 19 x 7 = 133.
The product of the prime numbers 19 and 23 is 437.
You could say the numbers 1 to 20 or even the numbers 0 to 19, but in reality there is no first number, as we have negative numbers. If you were saying it was not just limited to whole numbers, there would be even more. So mathematically there is no answer to the question.
2*19 = 38
2*3*19
19 and 2
441