18 is a natural number following 17 and preecending 19
18 is a natural number following 17 and preecending 19
18 is a natural number following 17 and preecending 19
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it is a odd number
No, 18 is not a square number
No 18 is not. It is a abundant number.
No, 18 is not a triangular number.
1000 is not a prime number