Pretty sure the U.S. Code says it means to act or incite to act against the authority of the United States. Such as the authority of the United States says it’s time for Congress to count and certify electoral votes, and you try to stop it from doing so. https://www.law.cornell.edu/uscode/text/18/2383
Yes, ha ha, but Arabic Numerals, with a capital N, refers to ٠ ١ ٢ ٣ ٤ ٥ ٦ ٧ ٨ ٩ that’s 9 through 0 read left-to-right because Arabic is written right-to-left. While you can see how the West adopted numerals based on Arabic ones eight hundred years ago (thanks to Fibonacci), we only call them Arabic numerals, with a lowercase n, to distinguish them from the Roman numerals we were historically using. Today they aren’t really Arabic anymore, and I don’t know why you’d learn Arabic Numerals unless you were learning to read and write Arabic.