Base | Representation |
---|---|
bin | 100010100011… |
… | …1011011001001 |
3 | 1021002111200211 |
4 | 1011013123021 |
5 | 14114241340 |
6 | 1444201121 |
7 | 310001110 |
oct | 105073311 |
9 | 37074624 |
10 | 18118345 |
11 | a255643 |
12 | 60991a1 |
13 | 39a4b1b |
14 | 2598c77 |
15 | 18cd5ea |
hex | 11476c9 |
18118345 has 32 divisors (see below), whose sum is σ = 27053568. Its totient is φ = 11363328.
The previous prime is 18118337. The next prime is 18118349. The reversal of 18118345 is 54381181.
It is a cyclic number.
It is not a de Polignac number, because 18118345 - 23 = 18118337 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (18118349) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21604 + ... + 22426.
It is an arithmetic number, because the mean of its divisors is an integer number (845424).
Almost surely, 218118345 is an apocalyptic number.
It is an amenable number.
18118345 is a deficient number, since it is larger than the sum of its proper divisors (8935223).
18118345 is a wasteful number, since it uses less digits than its factorization.
18118345 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 889.
The product of its digits is 3840, while the sum is 31.
The square root of 18118345 is about 4256.5649296117. The cubic root of 18118345 is about 262.6472401467.
The spelling of 18118345 in words is "eighteen million, one hundred eighteen thousand, three hundred forty-five".
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