WP-Admin URL (HOW TO RENAME)

Hello,

I’m wondering if there any way that may help to change or just rename wp-admin URL to something else!
for example instead of wp-admin/profile.php i suppose it shoud be http://www.SiteName.com/UserName/profile.php or http://www.SiteName.com/RandomNumbers/profile.php, as i’ve noticed with most content system managements!

Thanks in advance