Base | Representation |
---|---|
bin | 1111011111111… |
… | …11001010110011 |
3 | 100001122200221021 |
4 | 13233333022303 |
5 | 231241120034 |
6 | 20522440311 |
7 | 3136103053 |
oct | 757771263 |
9 | 301580837 |
10 | 130020019 |
11 | 67435a68 |
12 | 37663097 |
13 | 20c2492c |
14 | 133a7563 |
15 | b6346b4 |
hex | 7bff2b3 |
130020019 has 2 divisors, whose sum is σ = 130020020. Its totient is φ = 130020018.
The previous prime is 130020013. The next prime is 130020031. The reversal of 130020019 is 910020031.
It is a weak prime.
It is an emirp because it is prime and its reverse (910020031) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 130020019 - 29 = 130019507 is a prime.
It is a super-2 number, since 2×1300200192 = 33810410681520722, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 130019984 and 130020011.
It is not a weakly prime, because it can be changed into another prime (130020013) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65010009 + 65010010.
It is an arithmetic number, because the mean of its divisors is an integer number (65010010).
Almost surely, 2130020019 is an apocalyptic number.
130020019 is a deficient number, since it is larger than the sum of its proper divisors (1).
130020019 is an equidigital number, since it uses as much as digits as its factorization.
130020019 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 54, while the sum is 16.
The square root of 130020019 is about 11402.6321084213. The cubic root of 130020019 is about 506.6057037012.
The spelling of 130020019 in words is "one hundred thirty million, twenty thousand, nineteen".
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