Base | Representation |
---|---|
bin | 1000011111111010101011… |
… | …00110100010010101100010 |
3 | 2110011122011022110220220010 |
4 | 10033331111212202111202 |
5 | 4422144220222322440 |
6 | 103425311204425350 |
7 | 3636136564221534 |
oct | 417752546422542 |
9 | 73148138426803 |
10 | 18688838870370 |
11 | 5a5598a363a79 |
12 | 211a0323a8256 |
13 | a57471a972a6 |
14 | 48878a65b854 |
15 | 226216194580 |
hex | 10ff559a2562 |
18688838870370 has 32 divisors (see below), whose sum is σ = 44880119955648. Its totient is φ = 4980700735808.
The previous prime is 18688838870363. The next prime is 18688838870389. The reversal of 18688838870370 is 7307883888681.
18688838870370 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.
It is a junction number, because it is equal to n+sod(n) for n = 18688838870292 and 18688838870301.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186801009 + ... + 186901028.
It is an arithmetic number, because the mean of its divisors is an integer number (1402503748614).
Almost surely, 218688838870370 is an apocalyptic number.
18688838870370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
18688838870370 is an abundant number, since it is smaller than the sum of its proper divisors (26191281085278).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18688838870370 is a wasteful number, since it uses less digits than its factorization.
18688838870370 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 373703714.
The product of its (nonzero) digits is 693633024, while the sum is 75.
The spelling of 18688838870370 in words is "eighteen trillion, six hundred eighty-eight billion, eight hundred thirty-eight million, eight hundred seventy thousand, three hundred seventy".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •