Base | Representation |
---|---|
bin | 10001001101001000… |
… | …110101010100101100 |
3 | 1202200111010222110102 |
4 | 101031020311110230 |
5 | 300313322433010 |
6 | 12253054330232 |
7 | 1222542444611 |
oct | 211510652454 |
9 | 52614128412 |
10 | 18474030380 |
11 | 7920121503 |
12 | 36b6ab9978 |
13 | 19854c2030 |
14 | c73782508 |
15 | 731ce1ba5 |
hex | 44d23552c |
18474030380 has 48 divisors (see below), whose sum is σ = 41797655424. Its totient is φ = 6818254080.
The previous prime is 18474030371. The next prime is 18474030389. The reversal of 18474030380 is 8303047481.
It is an interprime number because it is at equal distance from previous prime (18474030371) and next prime (18474030389).
It is not an unprimeable number, because it can be changed into a prime (18474030389) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647210 + ... + 675150.
It is an arithmetic number, because the mean of its divisors is an integer number (870784488).
Almost surely, 218474030380 is an apocalyptic number.
18474030380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
18474030380 is an abundant number, since it is smaller than the sum of its proper divisors (23323625044).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18474030380 is a wasteful number, since it uses less digits than its factorization.
18474030380 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 30506 (or 30504 counting only the distinct ones).
The product of its (nonzero) digits is 64512, while the sum is 38.
The spelling of 18474030380 in words is "eighteen billion, four hundred seventy-four million, thirty thousand, three hundred eighty".
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