Base | Representation |
---|---|
bin | 111111011110111… |
… | …0111000011001111 |
3 | 12111110020121021022 |
4 | 1332331313003033 |
5 | 13330304123422 |
6 | 551212224355 |
7 | 103533636461 |
oct | 17675670317 |
9 | 5443217238 |
10 | 2130145487 |
11 | 9a3458918 |
12 | 4b546b0bb |
13 | 27c414122 |
14 | 162c96131 |
15 | c701e342 |
hex | 7ef770cf |
2130145487 has 2 divisors, whose sum is σ = 2130145488. Its totient is φ = 2130145486.
The previous prime is 2130145477. The next prime is 2130145531. The reversal of 2130145487 is 7845410312.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 2130145487 - 220 = 2129096911 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2130145417) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065072743 + 1065072744.
It is an arithmetic number, because the mean of its divisors is an integer number (1065072744).
Almost surely, 22130145487 is an apocalyptic number.
2130145487 is a deficient number, since it is larger than the sum of its proper divisors (1).
2130145487 is an equidigital number, since it uses as much as digits as its factorization.
2130145487 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 26880, while the sum is 35.
The square root of 2130145487 is about 46153.4991847855. The cubic root of 2130145487 is about 1286.6776448618.
Adding to 2130145487 its reverse (7845410312), we get a palindrome (9975555799).
The spelling of 2130145487 in words is "two billion, one hundred thirty million, one hundred forty-five thousand, four hundred eighty-seven".
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