Base | Representation |
---|---|
bin | 10100001100101101000… |
… | …010100110001110111010 |
3 | 11220200202012111110220000 |
4 | 110030231002212032322 |
5 | 140220141200422333 |
6 | 2541352514013430 |
7 | 202165452054510 |
oct | 24145502461672 |
9 | 4820665443800 |
10 | 1388030092218 |
11 | 49572988a420 |
12 | 1a5014577276 |
13 | a0b76a7a2c3 |
14 | 4b2769c24b0 |
15 | 2618c385713 |
hex | 1432d0a63ba |
1388030092218 has 320 divisors, whose sum is σ = 4114440354816. Its totient is φ = 338603328000.
The previous prime is 1388030092181. The next prime is 1388030092223. The reversal of 1388030092218 is 8122900308831.
It is a happy number.
It is a Curzon number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 104113813 + ... + 104127143.
Almost surely, 21388030092218 is an apocalyptic number.
1388030092218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is a practical number, because each smaller number is the sum of distinct divisors of 1388030092218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057220177408).
1388030092218 is an abundant number, since it is smaller than the sum of its proper divisors (2726410262598).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1388030092218 is a wasteful number, since it uses less digits than its factorization.
1388030092218 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 13871 (or 13862 counting only the distinct ones).
The product of its (nonzero) digits is 165888, while the sum is 45.
The spelling of 1388030092218 in words is "one trillion, three hundred eighty-eight billion, thirty million, ninety-two thousand, two hundred eighteen".
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