Base | Representation |
---|---|
bin | 10000110101101011… |
… | …001010011001000000 |
3 | 1201200001102021200210 |
4 | 100311223022121000 |
5 | 244012034021014 |
6 | 12150033114120 |
7 | 1210022443410 |
oct | 206553123100 |
9 | 51601367623 |
10 | 18080376384 |
11 | 77389a0424 |
12 | 36070b8940 |
13 | 1921a93085 |
14 | c37390640 |
15 | 70c483859 |
hex | 435aca640 |
18080376384 has 168 divisors, whose sum is σ = 58078014400. Its totient is φ = 4861845504.
The previous prime is 18080376361. The next prime is 18080376389. The reversal of 18080376384 is 48367308081.
It is a tau number, because it is divible by the number of its divisors (168).
It is a hoax number, since the sum of its digits (48) 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 (48).
It is not an unprimeable number, because it can be changed into a prime (18080376389) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 365142 + ... + 411690.
Almost surely, 218080376384 is an apocalyptic number.
18080376384 is a gapful number since it is divisible by the number (14) 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 18080376384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29039007200).
18080376384 is an abundant number, since it is smaller than the sum of its proper divisors (39997638016).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18080376384 is a wasteful number, since it uses less digits than its factorization.
18080376384 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 46605 (or 46578 counting only the distinct ones).
The product of its (nonzero) digits is 774144, while the sum is 48.
The spelling of 18080376384 in words is "eighteen billion, eighty million, three hundred seventy-six thousand, three hundred eighty-four".
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