4.5 billion equals 4.5 billion. In numerical terms, 4.5 billion is the same as 4.5 billion.4.5 billion equals 4.5 billion in numerical terms. In terms of the unit conversion, 4.5 billion is equal to 4.5 billion. In short, when converting 4.5 billion to another unit, it remains as 4.5 billion.
