Base | Representation |
---|---|
bin | 1111001001001111… |
… | …00101001100000001 |
3 | 202222122001122202020 |
4 | 13210213211030001 |
5 | 113122410022411 |
6 | 3422441512053 |
7 | 405324343656 |
oct | 74447451401 |
9 | 22878048666 |
10 | 8130548481 |
11 | 34a2534460 |
12 | 16aaaa2629 |
13 | 9c75c1443 |
14 | 571b6bc2d |
15 | 328bd6606 |
hex | 1e49e5301 |
8130548481 has 16 divisors (see below), whose sum is σ = 11901586368. Its totient is φ = 4896216000.
The previous prime is 8130548443. The next prime is 8130548497. The reversal of 8130548481 is 1848450318.
It is not a de Polignac number, because 8130548481 - 29 = 8130547969 is a prime.
It is a super-2 number, since 2×81305484812 (a number of 21 digits) contains 22 as substring.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (8130548681) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 779470 + ... + 789831.
It is an arithmetic number, because the mean of its divisors is an integer number (743849148).
Almost surely, 28130548481 is an apocalyptic number.
It is an amenable number.
8130548481 is a deficient number, since it is larger than the sum of its proper divisors (3771037887).
8130548481 is a wasteful number, since it uses less digits than its factorization.
8130548481 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1569472.
The product of its (nonzero) digits is 122880, while the sum is 42.
The square root of 8130548481 is about 90169.5540689872. The cubic root of 8130548481 is about 2010.8203940478.
Adding to 8130548481 its reverse (1848450318), we get a palindrome (9978998799).
The spelling of 8130548481 in words is "eight billion, one hundred thirty million, five hundred forty-eight thousand, four hundred eighty-one".
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