Yep, that is why he was able to live for more than 900 years. If you look at genealogy in Genesis you will notice that the lifespan decreased with every generation after the great flood.
Part of that was divine, though, because those long, sinfilled lives just made pre-flood societies get worse and worse, leading to the judgement of the flood of course.
Part of the intense wickedness was due to the long lifespans.