Answer: 3
Explanation:
Since we want the least number of integers, divide by the largest integer (9).
2018 ÷ 9 = 224 remainder 2
So, N = 2999...999 (there are 224 of the 9's)
Thus, N + 1 = 2999...999 + 1 (there are 224 of the 9's)
= 3000...000 (there are 224 of the 0's)
The sum of the digits is: 3 + 0 + ... + 0 (there are 224 of the 0's)
= 3
