Base | Representation |
---|---|
bin | 100010100100… |
… | …1000011101101 |
3 | 1021002211212200 |
4 | 1011021003231 |
5 | 14120000122 |
6 | 1444252113 |
7 | 310026450 |
oct | 105110355 |
9 | 37084780 |
10 | 18125037 |
11 | a25a677 |
12 | 60a1039 |
13 | 39a7b98 |
14 | 259b497 |
15 | 18d05ac |
hex | 11490ed |
18125037 has 24 divisors (see below), whose sum is σ = 30111744. Its totient is φ = 10291104.
The previous prime is 18125027. The next prime is 18125047. The reversal of 18125037 is 73052181.
It is an interprime number because it is at equal distance from previous prime (18125027) and next prime (18125047).
It is not a de Polignac number, because 18125037 - 211 = 18122989 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 18125037.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18125017) 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 23 ways as a sum of consecutive naturals, for example, 10068 + ... + 11730.
It is an arithmetic number, because the mean of its divisors is an integer number (1254656).
Almost surely, 218125037 is an apocalyptic number.
It is an amenable number.
18125037 is a deficient number, since it is larger than the sum of its proper divisors (11986707).
18125037 is a wasteful number, since it uses less digits than its factorization.
18125037 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1849 (or 1846 counting only the distinct ones).
The product of its (nonzero) digits is 1680, while the sum is 27.
The square root of 18125037 is about 4257.3509369090. The cubic root of 18125037 is about 262.6795723673.
The spelling of 18125037 in words is "eighteen million, one hundred twenty-five thousand, thirty-seven".
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