# Identify the Polar Equation r=-18cos(theta)

Identify the Polar Equation r=-18cos(theta)
This is an equation of a circle.
Circle
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### Name

Name two hundred eighty-six million four hundred eighty-six thousand four hundred fifty-four

### Interesting facts

• 286486454 has 8 divisors, whose sum is 432866808
• The reverse of 286486454 is 454684682
• Previous prime number is 137

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 47
• Digital Root 2

### Name

Name one billion four hundred ten million nine hundred fifty-seven thousand five hundred thirty-seven

### Interesting facts

• 1410957537 has 8 divisors, whose sum is 1420505856
• The reverse of 1410957537 is 7357590141
• Previous prime number is 197

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 42
• Digital Root 6

### Name

Name one billion six hundred fifty-three million three hundred seventy-five thousand nine hundred five

### Interesting facts

• 1653375905 has 16 divisors, whose sum is 2019354624
• The reverse of 1653375905 is 5095733561
• Previous prime number is 251

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 44
• Digital Root 8