The Dark Tower: 15 Easter Eggs You Probably Missed
6. The Number 19
As already touched on, Stephen King has a bit of a number fetish and one in particularly really floats his boat - 19.
In the Kingian world, the eighth smallest prime number has mystical properties, particularly throughout the Dark Tower series. Roland encounters it everywhere, from people whose names have 19 letters, to branches that spell it out.
It's first glimpsed in the Dark Tower movie during the opening sequence where the Man in Black summons the children to his facility.
There's a close-up shot of a young girl checking her wrist device thingy, and there in the background is the number 19 scrawled all over the floor in chalk.