Base | Representation |
---|---|
bin | 11100101110001011… |
… | …000011000010001011 |
3 | 2221121020210210210102 |
4 | 130232023003002023 |
5 | 1001124342402034 |
6 | 22100055440015 |
7 | 2141141510423 |
oct | 345613030213 |
9 | 87536723712 |
10 | 30839419019 |
11 | 12096058a62 |
12 | 5b8808600b |
13 | 2ba626a246 |
14 | 16c7b15483 |
15 | c0768a97e |
hex | 72e2c308b |
30839419019 has 2 divisors, whose sum is σ = 30839419020. Its totient is φ = 30839419018.
The previous prime is 30839418959. The next prime is 30839419021. The reversal of 30839419019 is 91091493803.
It is a strong prime.
It is an emirp because it is prime and its reverse (91091493803) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30839419019 - 220 = 30838370443 is a prime.
It is a super-2 number, since 2×308394190192 (a number of 22 digits) contains 22 as substring.
Together with 30839419021, 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 (30839416019) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15419709509 + 15419709510.
It is an arithmetic number, because the mean of its divisors is an integer number (15419709510).
Almost surely, 230839419019 is an apocalyptic number.
30839419019 is a deficient number, since it is larger than the sum of its proper divisors (1).
30839419019 is an equidigital number, since it uses as much as digits as its factorization.
30839419019 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 209952, while the sum is 47.
The spelling of 30839419019 in words is "thirty billion, eight hundred thirty-nine million, four hundred nineteen thousand, nineteen".
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