1981859894 is an even 10-digits composite number following 1981859893
and preceding 1981859895 . In scientific notation, it is written as 1.981859894 × 10^9.
The sum of its digits is 62. It has a total of 4 prime factors and 16 positive divisors.
There are 847248000 positive integers (up to 1981859894) that are relatively prime to 1981859894.
1981859894 has 16 divisors, whose sum is 3405956256
The reverse of 1981859894 is 4989581891
Previous prime number is 401
Is Prime? no Number parity even Number length 10 Sum of Digits 62 Digital Root 8
Name
one billion nine hundred eighty-one million eight hundred fifty-nine thousand eight hundred ninety-four
Scientific notation
1.981859894 × 10^9
Engineering notation
1.981859894 × 10^9
Prime Factorization
2 × 7 × 401 × 353021
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
1981859894 Product of the distinct prime numbers
The prime factorization of 1981859894 is 2 × 7 × 401 × 353021.
Since it has a total of 4 prime factors.
1 , 10 , 88 , 83 , 166 , 640 , 3505 , 3174 , 68997 , 87652 , 539058 , 906459 , 4502138 , 5070943 , 62251965 , 91716024 , 495085656 , 602062826 , 3061493047 , 680651649
n×2
3963719788
n×3
5945579682
n×4
7927439576
n×5
9909299470
n÷2
990929947
n÷3
660619964.66667
n÷3
495464973.5
n÷5
396371978.8
n2
3927768639445691236
n3
7.7842871394284E+27
n4
1.5427366485013E+37
n5
3.0574878906687E+46
2 √n44518.085021708
3 √n1256.1002914459
4 √n210.99309235543
5 √n72.346010959097
1 , 2 , 7 , 14 , 401 , 802 , 2807 , 5614 , 353021 , 706042 , 2471147 , 4942294 , 141561421 , 283122842 , 990929947 , 1981859894
16 divisors
τ Total Divisors
16 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1981859893 Sum of the proper positive divisors of n
A Arithmetic Mean
0.0625 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
1 Returns the nth root of the product of n divisors
H Harmonic Mean
16 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1981859894 can be divided by 16 positive divisors.
The sum of these divisors (counting 1981859894) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1110110001000001100100000110110
3
Ternary
12010010012220200022
4
Quaternary
1312020030200312
5
Quinary
13024324004034
6
Senary
524354045142
8
Octal
16610144066
10
Decimal
1981859894
12
Duodecimal
4738797b2
16
Hexadecimal
7620c836
20
Vigesimal
1aj6c9ee
36
Base36
wry4vq
md5
db0c1ace6a8557c51a720c471820ec26
sha1
0b6b7538d1128409a063714be8e95f80b294411a
sha256
48c80b49b17a5d00de71fd7ed53dafb188af6416adae882d0ec094d47f0c72da
sha512
9d4793834470bcf2516f68a43803d6af615484ca180cb3c0ffcc6441a8962d906707d0f7a0f8a71336f065cce4c6551cd73633798f757afb8b5983072b88c427
ripemd-160
0c53bf184d91c352304b6e3b6668a56ce6ec05e2
Diameter
3963719788
Circumference
12452392966.869
Area
1.2339449102683E+19
Volume
3.2606745720882E+28
Surface area
4.9357796410732E+19
Circumference
12452392966.869
Perimeter
7927439576
Area
3927768639445691236
Diagonal
2802773140.8181
Surface area
2.3566611836674E+19
Volume
7.7842871394284E+27
Space diagonal
3432682029.8911
Perimeter
5945579682
Area
1.7007737109739E+18
Altitude
1716341014.9455
Surface area
1.7007737109739E+18
Volume
9.173870371655E+26
Height
934257713.60603