| Base | Representation |
|---|---|
| bin | 10001010001000111… |
| … | …110001110110000000 |
| 3 | 1202212010220102101000 |
| 4 | 101101013301312000 |
| 5 | 300432430102343 |
| 6 | 12303443012000 |
| 7 | 1224313506504 |
| oct | 212107616600 |
| 9 | 52763812330 |
| 10 | 18540862848 |
| 11 | 7954919752 |
| 12 | 371536a000 |
| 13 | 19962c1b81 |
| 14 | c7c5bc304 |
| 15 | 737ae3ed3 |
| hex | 4511f1d80 |
18540862848 has 128 divisors (see below), whose sum is σ = 54952704000. Its totient is φ = 6154154496.
The previous prime is 18540862843. The next prime is 18540862849. The reversal of 18540862848 is 84826804581.
18540862848 is a `hidden beast` number, since 1 + 8 + 5 + 4 + 0 + 8 + 628 + 4 + 8 = 666.
It is a tau number, because it is divible by the number of its divisors (128).
It is a super-2 number, since 2×185408628482 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a junction number, because it is equal to n+sod(n) for n = 18540862794 and 18540862803.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18540862841) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814761 + ... + 837207.
It is an arithmetic number, because the mean of its divisors is an integer number (429318000).
Almost surely, 218540862848 is an apocalyptic number.
18540862848 is a gapful number since it is divisible by the number (18) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 18540862848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27476352000).
18540862848 is an abundant number, since it is smaller than the sum of its proper divisors (36411841152).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18540862848 is a wasteful number, since it uses less digits than its factorization.
18540862848 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 22709 (or 22691 counting only the distinct ones).
The product of its (nonzero) digits is 3932160, while the sum is 54.
The spelling of 18540862848 in words is "eighteen billion, five hundred forty million, eight hundred sixty-two thousand, eight hundred forty-eight".
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