Base | Representation |
---|---|
bin | 10001100010111111… |
… | …010111011011001000 |
3 | 1210122001000001102101 |
4 | 101202333113123020 |
5 | 302041201203433 |
6 | 12353312243144 |
7 | 1234613601034 |
oct | 214277273310 |
9 | 53561001371 |
10 | 18840647368 |
11 | 7a99066254 |
12 | 37998404b4 |
13 | 1a1344586a |
14 | caa3371c4 |
15 | 7540ae07d |
hex | 462fd76c8 |
18840647368 has 8 divisors (see below), whose sum is σ = 35326213830. Its totient is φ = 9420323680.
The previous prime is 18840647351. The next prime is 18840647381. The reversal of 18840647368 is 86374604881.
It can be written as a sum of positive squares in only one way, i.e., 18835366564 + 5280804 = 137242^2 + 2298^2 .
It is a tau number, because it is divible by the number of its divisors (8).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1177540453 + ... + 1177540468.
Almost surely, 218840647368 is an apocalyptic number.
It is an amenable number.
18840647368 is a deficient number, since it is larger than the sum of its proper divisors (16485566462).
18840647368 is a wasteful number, since it uses less digits than its factorization.
18840647368 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2355080927 (or 2355080923 counting only the distinct ones).
The product of its (nonzero) digits is 6193152, while the sum is 55.
The spelling of 18840647368 in words is "eighteen billion, eight hundred forty million, six hundred forty-seven thousand, three hundred sixty-eight".
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