Base | Representation |
---|---|
bin | 10001100101101000… |
… | …101100101111001000 |
3 | 1210202010112021112211 |
4 | 101211220230233020 |
5 | 302134032141000 |
6 | 12401535514504 |
7 | 1235663110624 |
oct | 214550545710 |
9 | 53663467484 |
10 | 18885037000 |
11 | 80111248a5 |
12 | 37b0688a34 |
13 | 1a1c6b840b |
14 | cb21b0184 |
15 | 757e2b7ba |
hex | 465a2cbc8 |
18885037000 has 64 divisors (see below), whose sum is σ = 44438284800. Its totient is φ = 7511742400.
The previous prime is 18885036977. The next prime is 18885037021. The reversal of 18885037000 is 73058881.
It is a Harshad number since it is a multiple of its sum of digits (40).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126249 + ... + 231751.
It is an arithmetic number, because the mean of its divisors is an integer number (694348200).
Almost surely, 218885037000 is an apocalyptic number.
18885037000 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 18885037000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22219142400).
18885037000 is an abundant number, since it is smaller than the sum of its proper divisors (25553247800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18885037000 is a wasteful number, since it uses less digits than its factorization.
18885037000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 105703 (or 105689 counting only the distinct ones).
The product of its (nonzero) digits is 53760, while the sum is 40.
The spelling of 18885037000 in words is "eighteen billion, eight hundred eighty-five million, thirty-seven thousand".
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