Base | Representation |
---|---|
bin | 100010011011… |
… | …1111011110101 |
3 | 1020222021200001 |
4 | 1010313323311 |
5 | 14110224101 |
6 | 1442551301 |
7 | 306315124 |
oct | 104677365 |
9 | 36867601 |
10 | 18054901 |
11 | a211a07 |
12 | 6068531 |
13 | 3981c97 |
14 | 257dabb |
15 | 18b9901 |
hex | 1137ef5 |
18054901 has 8 divisors (see below), whose sum is σ = 19315800. Its totient is φ = 16816128.
The previous prime is 18054893. The next prime is 18054917. The reversal of 18054901 is 10945081.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 998001 + 17056900 = 999^2 + 4130^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 18054901 - 23 = 18054893 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 18054901.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18054941) 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, 3826 + ... + 7123.
It is an arithmetic number, because the mean of its divisors is an integer number (2414475).
Almost surely, 218054901 is an apocalyptic number.
It is an amenable number.
18054901 is a deficient number, since it is larger than the sum of its proper divisors (1260899).
18054901 is a wasteful number, since it uses less digits than its factorization.
18054901 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11063.
The product of its (nonzero) digits is 1440, while the sum is 28.
The square root of 18054901 is about 4249.1059059525. The cubic root of 18054901 is about 262.3403158813.
Adding to 18054901 its reverse (10945081), we get a palindrome (28999982).
The spelling of 18054901 in words is "eighteen million, fifty-four thousand, nine hundred one".
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