| Base | Representation |
|---|---|
| bin | 10001100110111111… |
| … | …101011101001100000 |
| 3 | 1210210201102202010000 |
| 4 | 101212333223221200 |
| 5 | 302210401322242 |
| 6 | 12404112340000 |
| 7 | 1236360660153 |
| oct | 214677535140 |
| 9 | 53721382100 |
| 10 | 18907839072 |
| 11 | 8022a89391 |
| 12 | 37b8244600 |
| 13 | 1a24340075 |
| 14 | cb5227c9a |
| 15 | 759e32a4c |
| hex | 466feba60 |
18907839072 has 240 divisors, whose sum is σ = 56656575360. Its totient is φ = 6184968192.
The previous prime is 18907839061. The next prime is 18907839073. The reversal of 18907839072 is 27093870981.
18907839072 is a `hidden beast` number, since 189 + 0 + 7 + 8 + 390 + 72 = 666.
It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.
It is a Harshad number since it is a multiple of its sum of digits (54).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (18907839073) by changing a digit.
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 39 ways as a sum of consecutive naturals, for example, 39473329 + ... + 39473807.
It is an arithmetic number, because the mean of its divisors is an integer number (236069064).
Almost surely, 218907839072 is an apocalyptic number.
18907839072 is a gapful number since it is divisible by the number (12) 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 18907839072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28328287680).
18907839072 is an abundant number, since it is smaller than the sum of its proper divisors (37748736288).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18907839072 is a wasteful number, since it uses less digits than its factorization.
18907839072 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 755 (or 738 counting only the distinct ones).
The product of its (nonzero) digits is 1524096, while the sum is 54.
It can be divided in two parts, 189078 and 39072, that added together give a triangular number (228150 = T675).
The spelling of 18907839072 in words is "eighteen billion, nine hundred seven million, eight hundred thirty-nine thousand, seventy-two".
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