161749138 is an even 9-digits composite number following 161749137
and preceding 161749139 . In scientific notation, it is written as 1.61749138 × 10^8.
The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors.
There are 80378244 positive integers (up to 161749138) that are relatively prime to 161749138.
161749138 has 8 divisors, whose sum is 244112688
The reverse of 161749138 is 831947161
Previous prime number is 163
Is Prime? no
Number parity even
Number length 9
Sum of Digits 40
Digital Root 4
Name
one hundred sixty-one million seven hundred forty-nine thousand one hundred thirty-eight
Scientific notation
1.61749138 × 10^8
Engineering notation
1.61749138 × 10^6
Prime Factorization
2 × 163 × 496163
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
161749138
Product of the distinct prime numbers
The prime factorization of 161749138 is 2 × 163 × 496163.
Since it has a total of 3 prime factors.
1 , 3 , 30 , 31 , 711 , 450 , 1986 , 8686 , 15589 , 61735 , 401569 , 207564 , 7755093 , 4376596 , 47296199 , 80747191 , 59123364 , 318905617 , 4057937915 , 3529739733
n×2
323498276
n×3
485247414
n×4
646996552
n×5
808745690
n÷2
80874569
n÷3
53916379.333333
n÷3
40437284.5
n÷5
32349827.6
n2
26162783643743044
n3
4.2318077020559E+24
n4
6.8449124798931E+32
n5
1.1071586933081E+41
2 √n
12718.063453215
3 √n
544.85464574702
4 √n
112.77439183261
5 √n
43.829689596739
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
-161749137
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 161749138 can be divided by 8 positive divisors.
The sum of these divisors (counting 161749138) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101001000001100010010010
3
Ternary
102021100201002211
4
Quaternary
21221001202102
5
Quinary
312401433023
6
Senary
24014502334
8
Octal
1151014222
10
Decimal
161749138
12
Duodecimal
462049aa
16
Hexadecimal
9a41892
20
Vigesimal
2aaicgi
36
Base36
2oaufm
md5
a41fb1ec5e294ca8c14f3523b79e7b80
sha1
ece34a4d5f2de8e96170b88e4103fa52c8039563
sha256
176066b7ed7898d9d99382b470dbed10f02ad3676fa64ff18138d9eaade8f307
sha512
8b6ded86f07d12935a4be07c0d95d762fff6e11fa39309b16465ec46d0a839e9bca87419af4cb83e4a44d89836375a784672fafbee777bf21ee74aa304d9ce28
ripemd-160
6a485a735a2a759dd0cde595adec3ec98d99a27d
Diameter
323498276
Circumference
1016299807.3306
Area
8.2192808892642E+16
Volume
1.7726154650912E+25
Surface area
3.2877123557057E+17
Circumference
1016299807.3306
Perimeter
646996552
Area
26162783643743044
Diagonal
228747824.66176
Surface area
156976701862458264
Volume
4.2318077020559E+24
Space diagonal
280157725.09647
Perimeter
485247414
Area
1.1328817634599E+16
Altitude
140078862.54823
Surface area
1.1328817634599E+16
Volume
4.9872332046687E+23
Height
76249274.887252