Base | Representation |
---|---|
bin | 1000010001100101001001… |
… | …11011001011100000011001 |
3 | 2101102112200211200111100000 |
4 | 10020302210323023200121 |
5 | 4341111404100133110 |
6 | 102411124030203213 |
7 | 3555430666532361 |
oct | 410624473134031 |
9 | 71375624614300 |
10 | 18196248442905 |
11 | 5885a92964045 |
12 | 205a67a953509 |
13 | a1cb8ba65b80 |
14 | 46c9bb52b9a1 |
15 | 2184d5cd01c0 |
hex | 108ca4ecb819 |
18196248442905 has 384 divisors, whose sum is σ = 37702867378176. Its totient is φ = 8339853312000.
The previous prime is 18196248442849. The next prime is 18196248442937. The reversal of 18196248442905 is 50924484269181.
It is a happy number.
18196248442905 is a `hidden beast` number, since 1 + 8 + 1 + 9 + 62 + 48 + 442 + 90 + 5 = 666.
It is not a de Polignac number, because 18196248442905 - 28 = 18196248442649 is a prime.
It is a super-2 number, since 2×181962484429052 (a number of 27 digits) contains 22 as substring.
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 in 383 ways as a sum of consecutive naturals, for example, 10103413005 + ... + 10103414805.
It is an arithmetic number, because the mean of its divisors is an integer number (98184550464).
Almost surely, 218196248442905 is an apocalyptic number.
18196248442905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
18196248442905 is an abundant number, since it is smaller than the sum of its proper divisors (19506618935271).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18196248442905 is a wasteful number, since it uses less digits than its factorization.
18196248442905 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2239 (or 2227 counting only the distinct ones).
The product of its (nonzero) digits is 39813120, while the sum is 63.
The spelling of 18196248442905 in words is "eighteen trillion, one hundred ninety-six billion, two hundred forty-eight million, four hundred forty-two thousand, nine hundred five".
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