168391381 is an odd 9-digits composite number following 168391380
and preceding 168391382 . In scientific notation, it is written as 1.68391381 × 10^8.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 168248332 positive integers (up to 168391381) that are relatively prime to 168391381.
168391381 has 4 divisors, whose sum is 168534432
The reverse of 168391381 is 183193861
Previous prime number is 1187
Is Prime? no Number parity odd Number length 9 Sum of Digits 40 Digital Root 4
Name
one hundred sixty-eight million three hundred ninety-one thousand three hundred eighty-one
Scientific notation
1.68391381 × 10^8
Engineering notation
1.68391381 × 10^6
Prime Factorization
1187 × 141863
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
168391381 Product of the distinct prime numbers
The prime factorization of 168391381 is 1187 × 141863.
Since it has a total of 2 prime factors.
2 , 5 , 75 , 75 , 560 , 541 , 9573 , 1656 , 68383 , 67625 , 384993 , 322852 , 5116773 , 999012 , 53453343 , 72526236 , 790312302 , 97990419 , 5513365806 , 5413970456
n×2
336782762
n×3
505174143
n×4
673565524
n×5
841956905
n÷2
84195690.5
n÷3
56130460.333333
n÷3
42097845.25
n÷5
33678276.2
n2
28355657195087161
n3
4.7748482742433E+24
n4
8.040432949653E+32
n5
1.35393960823E+41
2 √n12976.570463724
3 √n552.21299125866
4 √n113.914750861
5 √n44.183892312748
4 divisors
τ Total Divisors
4 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-168391380 Sum of the proper positive divisors of n
A Arithmetic Mean
0.25 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
4 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 168391381 can be divided by 4 positive divisors.
The sum of these divisors (counting 168391381) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010000010010111001011010101
3
Ternary
102201212011112211
4
Quaternary
22002113023111
5
Quinary
321102011011
6
Senary
24413113421
8
Octal
1202271325
10
Decimal
168391381
12
Duodecimal
48488871
16
Hexadecimal
a0972d5
20
Vigesimal
2cc8i91
36
Base36
2s97md
md5
ff40171d87728f90ab0eabc4a38bbc75
sha1
a692c3ec087f4df497352c4b7e5038103e13bc24
sha256
a7d2303a871fd3538a36d554314a043f4f1ee11f34d6dbd7c97a8e435ae71d82
sha512
093c13baa7cb3fd8d9de1027d40490658705ca9ef3b4caec6b102fbedb3109b3f5f282267a8e92708f8800fa3da3bcb35e721d1339ead37aeaf668f721cdfcd3
ripemd-160
33d1687b3a406fd808f1c4d660e2d866b7d8d0d1
Diameter
336782762
Circumference
1058034250.9549
Area
8.9081924331796E+16
Volume
2.0000837680492E+25
Surface area
3.5632769732719E+17
Circumference
1058034250.9549
Perimeter
673565524
Area
28355657195087161
Diagonal
238141374.79694
Surface area
170133943170522966
Volume
4.7748482742433E+24
Space diagonal
291662427.44869
Perimeter
505174143
Area
1.2278359735974E+16
Altitude
145831213.72434
Surface area
1.2278359735974E+16
Volume
5.6272126564239E+23
Height
79380458.265645