Base | Representation |
---|---|
bin | 11100010011000101… |
… | …110100011011100001 |
3 | 2220102120212011101202 |
4 | 130103011310123201 |
5 | 444212034014044 |
6 | 21543025210545 |
7 | 2123653531253 |
oct | 342305643341 |
9 | 86376764352 |
10 | 30385063649 |
11 | 11982638056 |
12 | 5a7ba90a55 |
13 | 2b330a7005 |
14 | 1683641cd3 |
15 | bcc83bc4e |
hex | 7131746e1 |
30385063649 has 2 divisors, whose sum is σ = 30385063650. Its totient is φ = 30385063648.
The previous prime is 30385063607. The next prime is 30385063711. The reversal of 30385063649 is 94636058303.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 29935920400 + 449143249 = 173020^2 + 21193^2 .
It is a cyclic number.
It is not a de Polignac number, because 30385063649 - 232 = 26090096353 is a prime.
It is not a weakly prime, because it can be changed into another prime (30385063349) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15192531824 + 15192531825.
It is an arithmetic number, because the mean of its divisors is an integer number (15192531825).
Almost surely, 230385063649 is an apocalyptic number.
It is an amenable number.
30385063649 is a deficient number, since it is larger than the sum of its proper divisors (1).
30385063649 is an equidigital number, since it uses as much as digits as its factorization.
30385063649 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 1399680, while the sum is 47.
The spelling of 30385063649 in words is "thirty billion, three hundred eighty-five million, sixty-three thousand, six hundred forty-nine".
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