How many pounds are in a calorie?

3500 calories need to be burned for a human to lose one pound of body fat.

If you burn 3,500 calories, you will have lost a pound. So, if you eat around 1900 calories a day, drink tons of water, and run for a while, you will lose slowly but surely. 3597, actually is a pound, but if you drink tons of water, 3500 is a pound, to be lost...
i heard that 1 lb is equal to 3500 calories.