Why is it called "invisible"?
38577326 is still long, how long is a new number?
1-Those numbers are invisible ICQ numbers that they won't be found via ICQ Search that means if you try to search them , you'll receive a "Not Found" message.
That'll keep your ICQ number (UIN) private and only be reachable to those you give information.
2-Those numbers are invisible ICQ numbers so no one can take them back after they are sold.That's often the case with ICQ numbers.You lose them after you buy them because scammers retreive the passwords to their previous mail address and left you in vain.
An Invisible ICQ number does not contain any information ( incl. mail address ) in details , so the mail address you'll place in your details will :
A-Turn your Invisible ICQ number to a visible one.
B-Grant your mail address the protection of your ICQ number.Your ICQ number's password will always come to the mail address you've written in details.
8 digit is terrible, you can buy 6 digs with actual nice patterns for the price you have, OP.