G-Mail - see number?

Can someone see my number from my GMail address or somehow through contacts?

I have a Huawei and I don't look through all the services, accounts, etc. Etc. What exactly can you see from me personally and what not? My subscribers on YouTube, or my entries and pictures on Google Calendar? What do people see I want to keep everything private as it should be.

As far as I know they can't see your number. On YouTube you can set whether you can see who you have subscribed to or which videos you have liked.

Whether it's a huawei or a phone, it works the same everywhere, you have to think along if you allow something, because you give the access. And what happens to the data, always read carefully.