The formula used to arrive at the answer:2 billion mi*
1.609344 km
1 mi
=
3.2 billion km
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4.5 billion km = ~2.8 billion miles.
3.67 billion miles = 5,906,292,480 km
1.59 billion miles
7.5 billion kilometers = ~4.7 billion miles.
Answer: 2 km = 1.24274 mi.The formula to convert 2 km to miles:2 km*1 mi1.609344 km=1.242742384 mi