"One thousand dollars"

Translation: Одна тисяча доларів

[Wolflamyra]

You can omit "one", it is implied by singular "тисяча"

[tomekico]

It was already reported IIRC but it's hard to tell when it will be accepted.

[nadine29]

Why is dollar genative, and not nomative?

[JokertheCat15]

It's the feature of the language. Literally, "одна тисяча доларів" means "one thousand OF dollars", that is why you should use genative.
The same construction you can find in some other slavic languages. For example, in Russian: "одна тысяча долларов" = "one thousand dollars" (literally: one thousand OF dollars).

[Sco11Pup]

Why has this turned to the female form? Dollars is male!

[JokertheCat15]

If you talk about the word "одна", I should say that it is related to the word "тисяча", not to the dollars. Literally, "одна тисяча доларiв" means "one thousand OF dollars" so you should use "одна" because "тисяча" is a feminine word.