Base | Representation |
---|---|
bin | 10000110010101011… |
… | …100100011000110011 |
3 | 1201112112220120201111 |
4 | 100302223210120303 |
5 | 243411204314334 |
6 | 12141040414151 |
7 | 1205542520353 |
oct | 206253443063 |
9 | 51475816644 |
10 | 18030151219 |
11 | 7712606523 |
12 | 35b2317357 |
13 | 1914559342 |
14 | c30838b63 |
15 | 707d62064 |
hex | 432ae4633 |
18030151219 has 2 divisors, whose sum is σ = 18030151220. Its totient is φ = 18030151218.
The previous prime is 18030151207. The next prime is 18030151291. The reversal of 18030151219 is 91215103081.
Together with next prime (18030151291) it forms an Ormiston pair, because they use the same digits, order apart.
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 18030151219 - 219 = 18029626931 is a prime.
It is a super-2 number, since 2×180301512192 (a number of 21 digits) contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (18030151819) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9015075609 + 9015075610.
It is an arithmetic number, because the mean of its divisors is an integer number (9015075610).
Almost surely, 218030151219 is an apocalyptic number.
18030151219 is a deficient number, since it is larger than the sum of its proper divisors (1).
18030151219 is an equidigital number, since it uses as much as digits as its factorization.
18030151219 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2160, while the sum is 31.
The spelling of 18030151219 in words is "eighteen billion, thirty million, one hundred fifty-one thousand, two hundred nineteen".
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