1,000 in words
1,000
one thousand
1,000 is written one thousand.
Ways to write it
- As an ordinal
- one thousandth
- Roman numeral
- M
- Expanded form
- 1,000
Place value
| Place | Digit | Value |
|---|---|---|
| thousands | 1 | 1,000 |
| hundreds | 0 | 0 |
| tens | 0 | 0 |
| ones | 0 | 0 |
Number facts
- Even or odd
- Even
- Prime or composite
- Composite
- Factors
- 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500 and 1,000 (16 factors)
- First 10 multiples
- 1,000, 2,000, 3,000, 4,000, 5,000, 6,000, 7,000, 8,000, 9,000, 10,000
- Square
- 1,000 × 1,000 = 1,000,000
- Square root
- ≈ 31.62
- Cube root
- 10
- Sum of the digits
- 1 + 0 + 0 + 0 = 1
- Rounded to the nearest 10
- 1,000
- Rounded to the nearest 100
- 1,000
- Rounded to the nearest 1000
- 1,000
- Number before
- 999
- Number after
- 1,001
- In binary
1111101000
Quick check
What number comes just after 1,000?
Show the answer
1,001
Is 1,000 even or odd?
Show the answer
Even
What is 1,000 + 10?
Show the answer
1,010
Practise with a game
Factors, Multiples & Primes
Multiples, factors, prime numbers, square numbers and prime factors.
Roman Numerals
Read and write Roman numerals from I to 3,999.Frequently asked questions
How do you write 1,000 in words?
1,000 is written "one thousand".
Is 1,000 a prime number?
No. 1,000 is a composite number, because it has more than two factors.
What are the factors of 1,000?
The factors of 1,000 are 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500 and 1,000.
How do you write 1,000 in Roman numerals?
1,000 in Roman numerals is M.