| Base | Representation |
|---|---|
| bin | 1000100100011101111101… |
| … | …10001101110111011000000 |
| 3 | 2110201120210221101000000000 |
| 4 | 10102032332301232323000 |
| 5 | 4432230003343021330 |
| 6 | 104025213043000000 |
| 7 | 3653344114002000 |
| oct | 422167661567300 |
| 9 | 73646727330000 |
| 10 | 18845222235840 |
| 11 | 6006239727080 |
| 12 | 21443b6969000 |
| 13 | a6913497b480 |
| 14 | 492183ad2000 |
| 15 | 22a31a386560 |
| hex | 1123bec6eec0 |
18845222235840 has 4480 divisors, whose sum is σ = 93732700723200. Its totient is φ = 3555411148800.
The previous prime is 18845222235787. The next prime is 18845222235841. The reversal of 18845222235840 is 4853222254881.
18845222235840 is a `hidden beast` number, since 1 + 8 + 8 + 4 + 52 + 2 + 2 + 2 + 3 + 584 + 0 = 666.
It is a super-2 number, since 2×188452222358402 (a number of 27 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is not an unprimeable number, because it can be changed into a prime (18845222235841) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 639 ways as a sum of consecutive naturals, for example, 308938069410 + ... + 308938069470.
It is an arithmetic number, because the mean of its divisors is an integer number (20922477840).
Almost surely, 218845222235840 is an apocalyptic number.
18845222235840 is a gapful number since it is divisible by the number (10) 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 18845222235840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46866350361600).
18845222235840 is an abundant number, since it is smaller than the sum of its proper divisors (74887478487360).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18845222235840 is an frugal number, since it uses more digits than its factorization.
18845222235840 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 150 (or 102 counting only the distinct ones).
The product of its (nonzero) digits is 9830400, while the sum is 54.
The spelling of 18845222235840 in words is "eighteen trillion, eight hundred forty-five billion, two hundred twenty-two million, two hundred thirty-five thousand, eight hundred forty".
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