It's a good opportunity to find out...
You could also try and rename it back to Administrator and see if that works.
Why not boot into the Recovery Console since you can exit it without making any changes.
Once in it you can also explore what it can do by typing Help and review the list of commands.
I renamed my original Administrator account and created a password (as suggested by "Black Viper") for increased security. However I do not use it, I have another administrator account for daily use. If I should need to access Recovery Console will it recognize this renamed Administrator account. Thanks in advance.

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