Base | Representation |
---|---|
bin | 1000011111110111… |
… | …0100100110010101 |
3 | 12212222100102121201 |
4 | 2013331310212111 |
5 | 14132432133024 |
6 | 1014204312501 |
7 | 110346200626 |
oct | 20775644625 |
9 | 5788312551 |
10 | 2281130389 |
11 | a7070302a |
12 | 537b42731 |
13 | 2a47993c5 |
14 | 178d59a4d |
15 | d53e5744 |
hex | 87f74995 |
2281130389 has 2 divisors, whose sum is σ = 2281130390. Its totient is φ = 2281130388.
The previous prime is 2281130339. The next prime is 2281130413. The reversal of 2281130389 is 9830311822.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2064157489 + 216972900 = 45433^2 + 14730^2 .
It is a cyclic number.
It is not a de Polignac number, because 2281130389 - 211 = 2281128341 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2281130339) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1140565194 + 1140565195.
It is an arithmetic number, because the mean of its divisors is an integer number (1140565195).
Almost surely, 22281130389 is an apocalyptic number.
It is an amenable number.
2281130389 is a deficient number, since it is larger than the sum of its proper divisors (1).
2281130389 is an equidigital number, since it uses as much as digits as its factorization.
2281130389 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 20736, while the sum is 37.
The square root of 2281130389 is about 47761.1807747673. The cubic root of 2281130389 is about 1316.3863492194.
The spelling of 2281130389 in words is "two billion, two hundred eighty-one million, one hundred thirty thousand, three hundred eighty-nine".
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