Base | Representation |
---|---|
bin | 111110110000110… |
… | …1011011110000001 |
3 | 12102202202220112221 |
4 | 1331201223132001 |
5 | 13303112341201 |
6 | 544550251041 |
7 | 103121353501 |
oct | 17541533601 |
9 | 5382686487 |
10 | 2105980801 |
11 | 990853601 |
12 | 4a9356a81 |
13 | 2774031b2 |
14 | 15d9a5a01 |
15 | c4d494a1 |
hex | 7d86b781 |
2105980801 has 8 divisors (see below), whose sum is σ = 2115802080. Its totient is φ = 2096183232.
The previous prime is 2105980787. The next prime is 2105980819. The reversal of 2105980801 is 1080895012.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 2105980801 - 219 = 2105456513 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (2105980301) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186330 + ... + 197308.
It is an arithmetic number, because the mean of its divisors is an integer number (264475260).
Almost surely, 22105980801 is an apocalyptic number.
It is an amenable number.
2105980801 is a deficient number, since it is larger than the sum of its proper divisors (9821279).
2105980801 is a wasteful number, since it uses less digits than its factorization.
2105980801 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 11855.
The product of its (nonzero) digits is 5760, while the sum is 34.
The square root of 2105980801 is about 45890.9664422095. The cubic root of 2105980801 is about 1281.7937093991.
The spelling of 2105980801 in words is "two billion, one hundred five million, nine hundred eighty thousand, eight hundred one".
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