I mostly understand how to read / assemble numbers in Spanish. 1984, for example, would be mil novecientos ochenta y cuatro.

But when I say this number out loud in English, I would never say "one thousand nine hundred eighty four" even though it would be perfectly correct for me to do so. Instead I say "Nineteen eighty four" or maybe even "Nineteen hundred eighty four."

Does this kind of shorthand/slang pronunciation exist in Spanish? If I said diecinueve ochenta y cuatro would people look at me funny?