18189

18,189 is an odd composite number composed of three prime numbers multiplied together.

What does the number 18189 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

18189 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

Prime factorization of 18189:

32 × 43 × 47

(3 × 3 × 43 × 47)

See below for interesting mathematical facts about the number 18189 from the Numbermatics database.

Names of 18189

• Cardinal: 18189 can be written as Eighteen thousand, one hundred eighty-nine.

Scientific notation

• Scientific notation: 1.8189 × 104

Factors of 18189

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 93

Divisors of 18189

• Number of divisors d(n): 12
• Complete list of divisors:
• Sum of all divisors σ(n): 27456
• Sum of proper divisors (its aliquot sum) s(n): 9267
• 18189 is a deficient number, because the sum of its proper divisors (9267) is less than itself. Its deficiency is 8922

Bases of 18189

• Binary: 1000111000011012
• Base-36: E19

Squares and roots of 18189

• 18189 squared (181892) is 330839721
• 18189 cubed (181893) is 6017643685269
• The square root of 18189 is 134.8666007579
• The cube root of 18189 is 26.2988207097

Scales and comparisons

How big is 18189?
• 18,189 seconds is equal to 5 hours, 3 minutes, 9 seconds.
• To count from 1 to 18,189 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 18189 cubic inches would be around 2.2 feet tall.

Recreational maths with 18189

• 18189 backwards is 98181
• The number of decimal digits it has is: 5
• The sum of 18189's digits is 27
• More coming soon!

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