18961

18,961 is an odd composite number composed of two prime numbers multiplied together.

What does the number 18961 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

18961 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

Prime factorization of 18961:

67 × 283

See below for interesting mathematical facts about the number 18961 from the Numbermatics database.

Names of 18961

Cardinal: 18961 can be written as Eighteen thousand, nine hundred sixty-one.

Scientific notation

Scientific notation: 1.8961 × 10⁴

Factors of 18961

Number of distinct prime factors ω(n): 2
Total number of prime factors Ω(n): 2
Sum of prime factors: 350

Divisors of 18961

Number of divisors d(n): 4
Complete list of divisors:
1 67 283 18961
Sum of all divisors σ(n): 19312
Sum of proper divisors (its aliquot sum) s(n): 351
18961 is a deficient number, because the sum of its proper divisors (351) is less than itself. Its deficiency is 18610

Bases of 18961

Binary: 100101000010001₂
Hexadecimal: 0x4A11
Base-36: EMP

Squares and roots of 18961

18961 squared (18961²) is 359519521
18961 cubed (18961³) is 6816849637681
The square root of 18961 is 137.6989469821
The cube root of 18961 is 26.6657464961

Scales and comparisons

How big is 18961?

18,961 seconds is equal to 5 hours, 16 minutes, 1 second.
To count from 1 to 18,961 would take you about five hours.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 18961 cubic inches would be around 2.2 feet tall.

Recreational maths with 18961

18961 backwards is 16981
The number of decimal digits it has is: 5
The sum of 18961's digits is 25
More coming soon!

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The information we have on file for 18961 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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