When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

I don't get anymore wetter, no matter how much rain falls on me.

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

I know a nine-letter word having only one vowel.
Do you ?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

What is the Surname of Barbie Doll?

My first is in chocolate but not in ham. My second is in cake and also in jam. My third at tea time is easily found. Altogether, this is a friend who is often around. What is it?