1 million digits of PI 1 billion digits of PI Mandelbrot set Explorer

Number 1681

Properties of the number 1681

Prime Factorization 412
Divisors 1, 41, 1681
Count of divisors 3
Sum of divisors 1723
Previous integer 1680
Next integer 1682
Is prime? NO
Previous prime 1669
Next prime 1693
1681st prime number
calculating, please wait
Is a Fibonacci number? NO
Zeckendorf representation 1597 + 55 + 21 + 8
Is a Pell number? NO
Is a regular number? NO
Is a perfect number? NO
Is a perfect square number? YES
Is a perfect cube number? NO
Is power of 2? NO
Is power of 3? NO
Square 16812 2825761
Square root √1681 41
Cube 16813 4750104241
Cubic root ∛1681 11.890202136873
Natural logarithm 7.4271441334086
Decimal logarithm 3.2255677134395

Trigonometry of the number 1681

1681 modulo 360° 241°
Sine of 1681 radians -0.24539810131001
Cosine of 1681 radians -0.96942239084593
Tangent of 1681 radians 0.25313847052353
Sine of 1681 degrees -0.87461970713939
Cosine of 1681 degrees -0.48480962024634
Tangent of 1681 degrees 1.8040477552714
1681 degrees in radiants 29.338984726025
1681 radiants in degrees 96314.205361491

Base conversion of the number 1681

Binary 11010010001
Octal 3221
Duodecimal b81
Hexadecimal 691
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