Base | Representation |
---|---|
bin | 110101111000100… |
… | …0001100111101100 |
3 | 11200000002121200020 |
4 | 1223301001213230 |
5 | 12200322420204 |
6 | 455224002140 |
7 | 62542602162 |
oct | 15361014754 |
9 | 4600077606 |
10 | 1808013804 |
11 | 848638593 |
12 | 425600350 |
13 | 22a76786c |
14 | 1321a1232 |
15 | a8adcbd9 |
hex | 6bc419ec |
1808013804 has 24 divisors (see below), whose sum is σ = 4298298480. Its totient is φ = 591299904.
The previous prime is 1808013803. The next prime is 1808013811. The reversal of 1808013804 is 4083108081.
It is a happy number.
1808013804 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
It is not an unprimeable number, because it can be changed into a prime (1808013803) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1420759 + ... + 1422030.
It is an arithmetic number, because the mean of its divisors is an integer number (179095770).
Almost surely, 21808013804 is an apocalyptic number.
It is an amenable number.
1808013804 is an abundant number, since it is smaller than the sum of its proper divisors (2490284676).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1808013804 is a wasteful number, since it uses less digits than its factorization.
1808013804 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2842849 (or 2842847 counting only the distinct ones).
The product of its (nonzero) digits is 6144, while the sum is 33.
The square root of 1808013804 is about 42520.7455720146. The cubic root of 1808013804 is about 1218.2429701786.
The spelling of 1808013804 in words is "one billion, eight hundred eight million, thirteen thousand, eight hundred four".
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