−1
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| Cardinal | −1, minus one, negative one | ||||
| Ordinal | −1st (negative first) | ||||
| Divisors | 1 | ||||
| Arabic | −١ | ||||
| Chinese numeral | 负一，负弌，负壹 | ||||
| Bengali | −১ | ||||
| Binary (byte) |
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| Hex (byte) |
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| Octal (byte) |
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| Decimal (byte) |
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In mathematics, −1 (negative one or minus one) is the additive inverse of 1, that is, the number that when added to 1 gives the additive identity element, 0. It is the negative integer greater than negative two (−2) and less than 0.