Base | Representation |
---|---|
bin | 10001000010000101… |
… | …000011011011010000 |
3 | 1202012120000120011121 |
4 | 101002011003123100 |
5 | 244423323141232 |
6 | 12222425452024 |
7 | 1215130413250 |
oct | 210205033320 |
9 | 52176016147 |
10 | 18288490192 |
11 | 7835415405 |
12 | 3664941014 |
13 | 1955c2b53b |
14 | c56c85960 |
15 | 720891d97 |
hex | 4421436d0 |
18288490192 has 40 divisors (see below), whose sum is σ = 40913450816. Its totient is φ = 7757116416.
The previous prime is 18288490177. The next prime is 18288490201. The reversal of 18288490192 is 29109488281.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830838 + ... + 852565.
Almost surely, 218288490192 is an apocalyptic number.
It is an amenable number.
18288490192 is an abundant number, since it is smaller than the sum of its proper divisors (22624960624).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18288490192 is a wasteful number, since it uses less digits than its factorization.
18288490192 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1683515 (or 1683509 counting only the distinct ones).
The product of its (nonzero) digits is 663552, while the sum is 52.
The spelling of 18288490192 in words is "eighteen billion, two hundred eighty-eight million, four hundred ninety thousand, one hundred ninety-two".
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