161661838 is an even 9-digits composite number following 161661837
and preceding 161661839 . In scientific notation, it is written as 1.61661838 × 10^8.
The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors.
There are 72205920 positive integers (up to 161661838) that are relatively prime to 161661838.
161661838 has 16 divisors, whose sum is 269571456
The reverse of 161661838 is 838166161
Previous prime number is 31
Is Prime? no
Number parity even
Number length 9
Sum of Digits 40
Digital Root 4
Name
one hundred sixty-one million six hundred sixty-one thousand eight hundred thirty-eight
Scientific notation
1.61661838 × 10^8
Engineering notation
1.61661838 × 10^6
Prime Factorization
2 × 13 × 31 × 200573
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
161661838
Product of the distinct prime numbers
The prime factorization of 161661838 is 2 × 13 × 31 × 200573.
Since it has a total of 4 prime factors.
6 , 6 , 82 , 24 , 173 , 789 , 6079 , 3393 , 64961 , 35414 , 294383 , 975239 , 7816934 , 8695265 , 96459834 , 45511505 , 501001114 , 788993354 , 9702504165 , 525888197
n×2
323323676
n×3
484985514
n×4
646647352
n×5
808309190
n÷2
80830919
n÷3
53887279.333333
n÷3
40415459.5
n÷5
32332367.6
n2
26134549865538244
n3
4.2249593665656E+24
n4
6.8301469667431E+32
n5
1.1041741124538E+41
2 √n
12714.630863694
3 √n
544.75660427529
4 √n
112.75917197148
5 √n
43.824957382048
1 , 2 , 13 , 26 , 31 , 62 , 403 , 806 , 200573 , 401146 , 2607449 , 5214898 , 6217763 , 12435526 , 80830919 , 161661838
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
-161661837
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 161661838 can be divided by 16 positive divisors.
The sum of these divisors (counting 161661838) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001101000101100001110001110
3
Ternary
102021012021100111
4
Quaternary
21220230032032
5
Quinary
312341134323
6
Senary
24012550234
8
Octal
1150541616
10
Decimal
161661838
12
Duodecimal
4618237a
16
Hexadecimal
9a2c38e
20
Vigesimal
2aa7ebi
36
Base36
2o8z2m
md5
8e20c8b1c828895c0554dd41e65dc4b7
sha1
d6c808fdc3ce041e3dcc593b09629682fa324559
sha256
0714b11a8f55148f09959bcd98f6d7b8a4b7ed447058965957d3488dc4d8b6fb
sha512
d3cd88f632e3a4034282c1f3fb5b0b4a3ad9d6ff9a1214df0e5ea3c4037c0fa427a132f81bf517278618b3b365667f1fb00d663fdc6338cb1189796d80a4f21b
ripemd-160
8d9a00500ff83995d49b88445e8fc6d4c1b97143
Diameter
323323676
Circumference
1015751285.2532
Area
8.2104109862451E+16
Volume
1.769746841029E+25
Surface area
3.284164394498E+17
Circumference
1015751285.2532
Perimeter
646647352
Area
26134549865538244
Diagonal
228624363.81776
Surface area
156807299193229464
Volume
4.2249593665656E+24
Space diagonal
280006517.06097
Perimeter
484985514
Area
1.1316592050014E+16
Altitude
140003258.53048
Surface area
1.1316592050014E+16
Volume
4.9791623638936E+23
Height
76208121.272587