Base | Representation |
---|---|
bin | 11011111100011100… |
… | …010000111010000101 |
3 | 2212110002211120011012 |
4 | 123330130100322011 |
5 | 442422244241433 |
6 | 21441212452005 |
7 | 2111360620355 |
oct | 337434207205 |
9 | 85402746135 |
10 | 30005071493 |
11 | 117a8098351 |
12 | 599477a005 |
13 | 2aa244c597 |
14 | 1648da8b65 |
15 | ba92cb848 |
hex | 6fc710e85 |
30005071493 has 2 divisors, whose sum is σ = 30005071494. Its totient is φ = 30005071492.
The previous prime is 30005071471. The next prime is 30005071501. The reversal of 30005071493 is 39417050003.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 24524186404 + 5480885089 = 156602^2 + 74033^2 .
It is an emirp because it is prime and its reverse (39417050003) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30005071493 - 226 = 29937962629 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30005071403) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15002535746 + 15002535747.
It is an arithmetic number, because the mean of its divisors is an integer number (15002535747).
Almost surely, 230005071493 is an apocalyptic number.
It is an amenable number.
30005071493 is a deficient number, since it is larger than the sum of its proper divisors (1).
30005071493 is an equidigital number, since it uses as much as digits as its factorization.
30005071493 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 11340, while the sum is 32.
The spelling of 30005071493 in words is "thirty billion, five million, seventy-one thousand, four hundred ninety-three".
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