91991381 is an odd 8-digits prime number following 91991380
and preceding 91991382 . In scientific notation, it is written as 9.1991381 × 10^7.
The sum of its digits is 41. It has a total of 1 prime factors and 2 positive divisors.
There are 91991380 positive integers (up to 91991381) that are relatively prime to 91991381.
91991381 has 2 divisors, whose sum is 91991382
The reverse of 91991381 is 18319919
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 41 Digital Root 5
Name
ninety-one million nine hundred ninety-one thousand three hundred eighty-one
Scientific notation
9.1991381 × 10^7
Engineering notation
9.1991381 × 10^6
Prime Factorization
91991381
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
91991381 Product of the distinct prime numbers
The prime factorization of 91991381 is 91991381.
Since it has a total of 1 prime factors.
5 , 4 , 19 , 80 , 986 , 965 , 920 , 3695 , 54675 , 77340 , 61780 , 849931 , 5220466 , 6504793 , 61947816 , 92940440 , 877156216 , 470484554 , 5825993192 , 6273315230
n×2
183982762
n×3
275974143
n×4
367965524
n×5
459956905
n÷2
45995690.5
n÷3
30663793.666667
n÷3
22997845.25
n÷5
18398276.2
n2
8462414178287161
n3
7.7846916685462E+23
n4
7.1612453724876E+31
n5
6.5877285149499E+39
2 √n9591.2137396682
3 √n451.42164555397
4 √n97.934742250481
5 √n39.151592134915
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
91991382 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
45995691 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
9591.2137917992 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999782588 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 91991381 can be divided by 2 positive divisors.
The sum of these divisors (counting 91991381) is 91991382, the average is 45995691.
Base
System
Value
2
Binary
101011110111010110101010101
3
Ternary
20102002122110012
4
Quaternary
11132322311111
5
Quinary
142022211011
6
Senary
13043410005
8
Octal
536726525
10
Decimal
91991381
12
Duodecimal
26983905
16
Hexadecimal
57bad55
20
Vigesimal
18eii91
36
Base36
1irp05
md5
c3e6cf44c20b1ab69a266cd2f68d30a5
sha1
303944739ef268fe71920e3ae3fccf757a48c7e9
sha256
a829da8a05372f7ffe99cbb0ff3c456aaa433a4eea36c9185a49daadbeb34e77
sha512
1018701e95c7b089ce70236174713c8e0d57584ca78b41f991b16d228f13e7cdf98ca95ef4d5747616702eddbbe308829dc7ae504d928c748c0cef46766825d1
ripemd-160
c1d1916ba33b8dd5f5c10e3a595187b54227233a
Diameter
183982762
Circumference
577998893.48636
Area
2.6585458214141E+16
Volume
3.2608440208488E+24
Surface area
1.0634183285656E+17
Circumference
577998893.48636
Perimeter
367965524
Area
8462414178287161
Diagonal
130095458.63163
Surface area
50774485069722966
Volume
7.7846916685462E+23
Space diagonal
159333745.75043
Perimeter
275974143
Area
3.6643328278711E+15
Altitude
79666872.875213
Surface area
3.6643328278711E+15
Volume
9.1743471137924E+22
Height
43365152.87721