Converting an int to an IP address

Is there an easy way to convert an int to an IP address in PostgreSQL? I was able to go from IP to int using this开发者_运维问答 code:

SELECT inet '1.2.3.4'-'0.0.0.0'

This doesn't work:

SELECT 16909060::inet

I didn't see anything in the documentation. Does anyone know how to do this?

SELECT '0.0.0.0'::inet + 16909060

In case anyone else is trying to select from a table containing IP addresses and the column is defined as a long, you can cast to bigint and the conversion will work.

select '0.0.0.0'::inet + cast(source_ip as bigint) from addresses;