+**1e9** is the [Scientific Notation](/wiki/scientific_notation) for one billion (1,000,000,000). This compact form efficiently expresses vast quantities, from [Data Storage](/wiki/data_storage) to astronomical distances, signifying a profound magnitude in science and engineering.
+## See also
+- [Orders of Magnitude](/wiki/orders_of_magnitude)
+- [Exponents](/wiki/exponents)
+- [Metric Prefixes](/wiki/metric_prefixes)
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