# 1649

## 1,649 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1649 look like?

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

1649 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 1649:

### 17 × 97

See below for interesting mathematical facts about the number 1649 from the Numbermatics database.

### Names of 1649

• Cardinal: 1649 can be written as One thousand, six hundred forty-nine.

### Scientific notation

• Scientific notation: 1.649 × 103

### Factors of 1649

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 114

### Divisors of 1649

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 1764
• Sum of proper divisors (its aliquot sum) s(n): 115
• 1649 is a deficient number, because the sum of its proper divisors (115) is less than itself. Its deficiency is 1534

### Bases of 1649

• Binary: 110011100012
• Base-36: 19T

### Squares and roots of 1649

• 1649 squared (16492) is 2719201
• 1649 cubed (16493) is 4483962449
• The square root of 1649 is 40.6078810085
• The cube root of 1649 is 11.8142698187

### Scales and comparisons

How big is 1649?
• 1,649 seconds is equal to 27 minutes, 29 seconds.
• To count from 1 to 1,649 would take you about twenty-seven minutes.

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 1649 cubic inches would be around 1 feet tall.

### Recreational maths with 1649

• 1649 backwards is 9461
• The number of decimal digits it has is: 4
• The sum of 1649's digits is 20
• More coming soon!