1990689985 is an odd 10-digits composite number following 1990689984
and preceding 1990689986 . In scientific notation, it is written as 1.990689985 × 10^9.
The sum of its digits is 64. It has a total of 3 prime factors and 8 positive divisors.
There are 1592114160 positive integers (up to 1990689985) that are relatively prime to 1990689985.
1990689985 has 8 divisors, whose sum is 2389484736
The reverse of 1990689985 is 5899860991
Previous prime number is 3767
Is Prime? no Number parity odd Number length 10 Sum of Digits 64 Digital Root 1
Name
one billion nine hundred ninety million six hundred eighty-nine thousand nine hundred eighty-five
Scientific notation
1.990689985 × 10^9
Engineering notation
1.990689985 × 10^9
Prime Factorization
5 × 3767 × 105691
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1990689985 Product of the distinct prime numbers
The prime factorization of 1990689985 is 5 × 3767 × 105691.
Since it has a total of 3 prime factors.
9 , 8 , 84 , 3 , 853 , 80 , 9552 , 185 , 64267 , 24429 , 896425 , 247807 , 8451113 , 1918549 , 89056939 , 63623400 , 420117063 , 77240290 , 3063196781 , 1081100502
n×2
3981379970
n×3
5972069955
n×4
7962759940
n×5
9953449925
n÷2
995344992.5
n÷3
663563328.33333
n÷3
497672496.25
n÷5
398137997
n2
3962846616379300225
n3
7.8887990713174E+27
n4
1.5704153304949E+37
n5
3.1262100707066E+46
2 √n44617.149001253
3 √n1257.9630278968
4 √n211.22771835451
5 √n72.410363277742
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1990689984 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 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
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1990689985 can be divided by 8 positive divisors.
The sum of these divisors (counting 1990689985) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110110101001111000010011000001
3
Ternary
12010201211112021201
4
Quaternary
1312221320103001
5
Quinary
13034104034420
6
Senary
525311221201
8
Octal
16651702301
10
Decimal
1990689985
12
Duodecimal
476817801
16
Hexadecimal
76a784c1
20
Vigesimal
1b21g4j5
36
Base36
wx7e81
md5
b5f501cc8db6c1b956dff1c689b7986e
sha1
f9d92881814c157f913fdec9c3545f53a8fbf657
sha256
a41733411ec09b3a4d9fd29f3420fe2ca00a0532706429ad8aea93c9ce0cf632
sha512
247d121823febfecfd0f1a5b056ebccbe445b813644d47bbbbb07ee0d87401c7e4d6d28280af026f579c6319e96f9e84dbdba7e19457eeb6816d9589a4548ffc
ripemd-160
b50e096b0273b29dcc7ddda9ea87f4a115b37579
Diameter
3981379970
Circumference
12507874064.902
Area
1.244964981732E+19
Volume
3.3044524277462E+28
Surface area
4.9798599269282E+19
Circumference
12507874064.902
Perimeter
7962759940
Area
3962846616379300225
Diagonal
2815260775.2673
Surface area
2.3777079698276E+19
Volume
7.8887990713174E+27
Space diagonal
3447976196.1385
Perimeter
5972069955
Area
1.7159629205428E+18
Altitude
1723988098.0693
Surface area
1.7159629205428E+18
Volume
9.2970388645778E+26
Height
938420258.42243