Base | Representation |
---|---|
bin | 10001000010110100… |
… | …100000100001001001 |
3 | 1202020102102120112201 |
4 | 101002310200201021 |
5 | 244440014230441 |
6 | 12223552240201 |
7 | 1215341224255 |
oct | 210264404111 |
9 | 52212376481 |
10 | 18300930121 |
11 | 7841441741 |
12 | 3668b40061 |
13 | 1958695846 |
14 | c587a3265 |
15 | 7219ecc31 |
hex | 442d20849 |
18300930121 has 8 divisors (see below), whose sum is σ = 18798355584. Its totient is φ = 17803652400.
The previous prime is 18300930101. The next prime is 18300930133. The reversal of 18300930121 is 12103900381.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 18300930121 - 211 = 18300928073 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 18300930121.
It is not an unprimeable number, because it can be changed into a prime (18300930101) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242496 + ... + 308878.
It is an arithmetic number, because the mean of its divisors is an integer number (2349794448).
Almost surely, 218300930121 is an apocalyptic number.
It is an amenable number.
18300930121 is a deficient number, since it is larger than the sum of its proper divisors (497425463).
18300930121 is an equidigital number, since it uses as much as digits as its factorization.
18300930121 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 73871.
The product of its (nonzero) digits is 1296, while the sum is 28.
The spelling of 18300930121 in words is "eighteen billion, three hundred million, nine hundred thirty thousand, one hundred twenty-one".
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