All 737 aircraft are narrow bodies, from the 737-100 (the first 737) up to 737-900 (the latest 737).
The 737 is a big aircraft, weighing about 70,000 pounds and having a wingspan of 93 ft.
737 original: 737 100 737 200 737 classic: 737 300 737 400 737 500 737 Next generation: 737 600 737 700 737 800 737 900
Boeing make both 747 and 737 Aircraft.
Boeing 737
A Boeing 737-800.
The number 737 is "seven hundred thirty-seven." The aircraft, the Boeing 737, is spoken "Boeing seven thirty-seven."
Yes. They're basically the same aircraft.
The Boeing 737 is assembled in Renton, WA
lots
Boeing
That is a really loaded question, the best place to find the answer for that is to look at Boeing's website, though i doubt they even have a number, the 737 is one of the most popular passenger aircraft in the world, there are a lot in service.