The binary representation of the decimal number 1386 is 10101101010.

Would you like more details on the conversion process? Here are some related questions to explore further:

1. How can we convert binary numbers back to decimal?
2. What is the binary representation of 1024?
3. How does binary addition work?
4. What is the significance of binary numbers in computing?
5. Can negative numbers be represented in binary?

Tip: Binary numbers use base-2, meaning each digit is either 0 or 1, compared to base-10 in the decimal system.