161855213 is an odd 9-digits composite number following 161855212
and preceding 161855214 . In scientific notation, it is written as 1.61855213 × 10^8.
The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors.
There are 149289984 positive integers (up to 161855213) that are relatively prime to 161855213.
161855213 has 8 divisors, whose sum is 174439608
The reverse of 161855213 is 312558161
Previous prime number is 1553
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 32
Digital Root 5
Name
one hundred sixty-one million eight hundred fifty-five thousand two hundred thirteen
Scientific notation
1.61855213 × 10^8
Engineering notation
1.61855213 × 10^6
Prime Factorization
13 × 1553 × 8017
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
161855213
Product of the distinct prime numbers
The prime factorization of 161855213 is 13 × 1553 × 8017.
Since it has a total of 3 prime factors.
4 , 8 , 61 , 32 , 768 , 849 , 780 , 1765 , 15509 , 74675 , 509557 , 433696 , 2395867 , 8347841 , 13326879 , 38679714 , 263189413 , 32222213 , 4430652530 , 7577402391
n×2
323710426
n×3
485565639
n×4
647420852
n×5
809276065
n÷2
80927606.5
n÷3
53951737.666667
n÷3
40463803.25
n÷5
32371042.6
n2
26197109975275369
n3
4.2401388150326E+24
n4
6.8628857105667E+32
n5
1.1107938284784E+41
2 √n
12722.233019403
3 √n
544.97372485059
4 √n
112.79287663414
5 √n
43.835436786832
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
-161855212
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 161855213 can be divided by 8 positive divisors.
The sum of these divisors (counting 161855213) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101001011011011011101101
3
Ternary
102021120002121112
4
Quaternary
21221123123231
5
Quinary
312413331323
6
Senary
24021041405
8
Octal
1151333355
10
Decimal
161855213
12
Duodecimal
46256265
16
Hexadecimal
9a5b6ed
20
Vigesimal
2abbi0d
36
Base36
2od4a5
md5
526e85918800908d8b0646aa83dda3c1
sha1
dbeec8a6159ec86842c36109b132333ea67516e1
sha256
9a661b45d15119f61952b4685ce8eef7d748b8054adad18f6d565ddc2e89d101
sha512
29dade5d9a7178597eb96a5e4b9a43ff3c7970c3845ccd321a524a52dcc251dd68a9bea8a10a91151598e38eadca9f254f8fd0539e45eb555a1f04c76f498f54
ripemd-160
db624795067dd9f39f1f85193e032aedacb4391b
Diameter
323710426
Circumference
1016966296.212
Area
8.2300648243609E+16
Volume
1.7761051935343E+25
Surface area
3.2920259297444E+17
Circumference
1016966296.212
Perimeter
647420852
Area
26197109975275369
Diagonal
228897837.36539
Surface area
157182659851652214
Volume
4.2401388150326E+24
Space diagonal
280341452.38588
Perimeter
485565639
Area
1.1343681372162E+16
Altitude
140170726.19294
Surface area
1.1343681372162E+16
Volume
4.9970515154698E+23
Height
76299279.121795