Base | Representation |
---|---|
bin | 10000110010110001… |
… | …110101111000010010 |
3 | 1201112200000010120022 |
4 | 100302301311320102 |
5 | 243412114430410 |
6 | 12141135543442 |
7 | 1205562510014 |
oct | 206261657022 |
9 | 51480003508 |
10 | 18031795730 |
11 | 771352a023 |
12 | 35b298ab82 |
13 | 19149b3a20 |
14 | c30b461b4 |
15 | 708089455 |
hex | 432c75e12 |
18031795730 has 64 divisors (see below), whose sum is σ = 36121752576. Its totient is φ = 6435936000.
The previous prime is 18031795729. The next prime is 18031795759. The reversal of 18031795730 is 3759713081.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4717220 + ... + 4721040.
It is an arithmetic number, because the mean of its divisors is an integer number (564402384).
Almost surely, 218031795730 is an apocalyptic number.
18031795730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
18031795730 is an abundant number, since it is smaller than the sum of its proper divisors (18089956846).
18031795730 is a wasteful number, since it uses less digits than its factorization.
18031795730 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5043.
The product of its (nonzero) digits is 158760, while the sum is 44.
The spelling of 18031795730 in words is "eighteen billion, thirty-one million, seven hundred ninety-five thousand, seven hundred thirty".
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