Base | Representation |
---|---|
bin | 100100101010100… |
… | …1100101010001001 |
3 | 10011202000101121011 |
4 | 1021111030222021 |
5 | 10004423344031 |
6 | 322025243521 |
7 | 42326215633 |
oct | 11125145211 |
9 | 3152011534 |
10 | 1230293641 |
11 | 581517905 |
12 | 2a40335a1 |
13 | 167b70005 |
14 | b9577a53 |
15 | 730216b1 |
hex | 4954ca89 |
1230293641 has 2 divisors, whose sum is σ = 1230293642. Its totient is φ = 1230293640.
The previous prime is 1230293639. The next prime is 1230293693. The reversal of 1230293641 is 1463920321.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1005143616 + 225150025 = 31704^2 + 15005^2 .
It is a cyclic number.
It is not a de Polignac number, because 1230293641 - 21 = 1230293639 is a prime.
Together with 1230293639, it forms a pair of twin primes.
It is not a weakly prime, because it can be changed into another prime (1230293341) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615146820 + 615146821.
It is an arithmetic number, because the mean of its divisors is an integer number (615146821).
Almost surely, 21230293641 is an apocalyptic number.
It is an amenable number.
1230293641 is a deficient number, since it is larger than the sum of its proper divisors (1).
1230293641 is an equidigital number, since it uses as much as digits as its factorization.
1230293641 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 7776, while the sum is 31.
The square root of 1230293641 is about 35075.5419202612. The cubic root of 1230293641 is about 1071.5265255316.
The spelling of 1230293641 in words is "one billion, two hundred thirty million, two hundred ninety-three thousand, six hundred forty-one".
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