| Base | Representation |
|---|---|
| bin | 10000111011110000… |
| … | …111010001000000000 |
| 3 | 1201221011200000221200 |
| 4 | 100323300322020000 |
| 5 | 244214212432140 |
| 6 | 12204123021200 |
| 7 | 1212403042650 |
| oct | 207360721000 |
| 9 | 51834600850 |
| 10 | 18182545920 |
| 11 | 7790633960 |
| 12 | 363536a800 |
| 13 | 1939cb6216 |
| 14 | c46b88360 |
| 15 | 716416030 |
| hex | 43bc3a200 |
18182545920 has 960 divisors, whose sum is σ = 80922606336. Its totient is φ = 3662807040.
The previous prime is 18182545897. The next prime is 18182545939. The reversal of 18182545920 is 2954528181.
18182545920 is a `hidden beast` number, since 1 + 8 + 1 + 8 + 2 + 54 + 592 + 0 = 666.
It is a tau number, because it is divible by the number of its divisors (960).
It is a super-2 number, since 2×181825459202 (a number of 21 digits) contains 22 as substring.
It is a hoax number, since the sum of its digits (45) 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 (45).
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 65640822 + ... + 65641098.
Almost surely, 218182545920 is an apocalyptic number.
18182545920 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 18182545920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40461303168).
18182545920 is an abundant number, since it is smaller than the sum of its proper divisors (62740060416).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18182545920 is a wasteful number, since it uses less digits than its factorization.
18182545920 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 361 (or 342 counting only the distinct ones).
The product of its (nonzero) digits is 230400, while the sum is 45.
It can be divided in two parts, 18182545 and 920, that added together give a triangular number (18183465 = T6030).
The spelling of 18182545920 in words is "eighteen billion, one hundred eighty-two million, five hundred forty-five thousand, nine hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.068 sec. • engine limits •