Base | Representation |
---|---|
bin | 100111001100010… |
… | …0111101001111001 |
3 | 10101122112211010112 |
4 | 1032120213221321 |
5 | 10143124423404 |
6 | 334254354105 |
7 | 44405652641 |
oct | 11630475171 |
9 | 3348484115 |
10 | 1315076729 |
11 | 61536567a |
12 | 3084bb935 |
13 | 17c5b6515 |
14 | c6927521 |
15 | 7a6bc56e |
hex | 4e627a79 |
1315076729 has 2 divisors, whose sum is σ = 1315076730. Its totient is φ = 1315076728.
The previous prime is 1315076723. The next prime is 1315076731. The reversal of 1315076729 is 9276705131.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 727111225 + 587965504 = 26965^2 + 24248^2 .
It is an emirp because it is prime and its reverse (9276705131) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1315076729 - 28 = 1315076473 is a prime.
Together with 1315076731, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (1315076723) 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, 657538364 + 657538365.
It is an arithmetic number, because the mean of its divisors is an integer number (657538365).
Almost surely, 21315076729 is an apocalyptic number.
It is an amenable number.
1315076729 is a deficient number, since it is larger than the sum of its proper divisors (1).
1315076729 is an equidigital number, since it uses as much as digits as its factorization.
1315076729 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 79380, while the sum is 41.
The square root of 1315076729 is about 36263.9866672157. The cubic root of 1315076729 is about 1095.5958139967.
The spelling of 1315076729 in words is "one billion, three hundred fifteen million, seventy-six thousand, seven hundred twenty-nine".
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