Base | Representation |
---|---|
bin | 10000110110000111… |
… | …111110100011011011 |
3 | 1201200120122001102010 |
4 | 100312013332203123 |
5 | 244021002230300 |
6 | 12150503041003 |
7 | 1210143604005 |
oct | 206607764333 |
9 | 51616561363 |
10 | 18087930075 |
11 | 774218a646 |
12 | 3609740163 |
13 | 1923509307 |
14 | c38399375 |
15 | 70ce76a50 |
hex | 4361fe8db |
18087930075 has 24 divisors (see below), whose sum is σ = 30713635888. Its totient is φ = 9386167680.
The previous prime is 18087930059. The next prime is 18087930097. The reversal of 18087930075 is 57003978081.
It is not a de Polignac number, because 18087930075 - 24 = 18087930059 is a prime.
It is a super-3 number, since 3×180879300753 (a number of 32 digits) contains 333 as substring.
It is a Duffinian number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3256312 + ... + 3261861.
Almost surely, 218087930075 is an apocalyptic number.
18087930075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
18087930075 is a deficient number, since it is larger than the sum of its proper divisors (12625705813).
18087930075 is a wasteful number, since it uses less digits than its factorization.
18087930075 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6518223 (or 6518218 counting only the distinct ones).
The product of its (nonzero) digits is 423360, while the sum is 48.
The spelling of 18087930075 in words is "eighteen billion, eighty-seven million, nine hundred thirty thousand, seventy-five".
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