Base | Representation |
---|---|
bin | 100010010110… |
… | …1111111010001 |
3 | 1020220012210011 |
4 | 1010231333101 |
5 | 14102423121 |
6 | 1442034521 |
7 | 306055264 |
oct | 104557721 |
9 | 36805704 |
10 | 18014161 |
11 | a194340 |
12 | 6048a41 |
13 | 3969589 |
14 | 256ccdb |
15 | 18ac7e1 |
hex | 112dfd1 |
18014161 has 8 divisors (see below), whose sum is σ = 19855584. Its totient is φ = 16206720.
The previous prime is 18014111. The next prime is 18014167. The reversal of 18014161 is 16141081.
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 18014161 - 213 = 18005969 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (18014167) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7375 + ... + 9508.
It is an arithmetic number, because the mean of its divisors is an integer number (2481948).
Almost surely, 218014161 is an apocalyptic number.
18014161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
18014161 is a deficient number, since it is larger than the sum of its proper divisors (1841423).
18014161 is a wasteful number, since it uses less digits than its factorization.
18014161 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16991.
The product of its (nonzero) digits is 192, while the sum is 22.
The square root of 18014161 is about 4244.3092488649. The cubic root of 18014161 is about 262.1428479223.
Subtracting from 18014161 its reverse (16141081), we obtain a triangular number (1873080 = T1935).
It can be divided in two parts, 180 and 14161, that added together give a palindrome (14341).
The spelling of 18014161 in words is "eighteen million, fourteen thousand, one hundred sixty-one".
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