Base | Representation |
---|---|
bin | 1010011101000001… |
… | …1110101010100101 |
3 | 21020120012102002111 |
4 | 2213100132222211 |
5 | 21221331134411 |
6 | 1142240441021 |
7 | 126352404145 |
oct | 24720365245 |
9 | 7216172074 |
10 | 2806114981 |
11 | 120aa8479a |
12 | 663919171 |
13 | 35948b687 |
14 | 1c8976925 |
15 | 116546721 |
hex | a741eaa5 |
2806114981 has 2 divisors, whose sum is σ = 2806114982. Its totient is φ = 2806114980.
The previous prime is 2806114957. The next prime is 2806114999. The reversal of 2806114981 is 1894116082.
2806114981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2574040225 + 232074756 = 50735^2 + 15234^2 .
It is a cyclic number.
It is not a de Polignac number, because 2806114981 - 27 = 2806114853 is a prime.
It is a super-2 number, since 2×28061149812 = 15748562573185260722, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (2806114951) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1403057490 + 1403057491.
It is an arithmetic number, because the mean of its divisors is an integer number (1403057491).
Almost surely, 22806114981 is an apocalyptic number.
It is an amenable number.
2806114981 is a deficient number, since it is larger than the sum of its proper divisors (1).
2806114981 is an equidigital number, since it uses as much as digits as its factorization.
2806114981 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 27648, while the sum is 40.
The square root of 2806114981 is about 52972.7758475993. The cubic root of 2806114981 is about 1410.4850503291.
The spelling of 2806114981 in words is "two billion, eight hundred six million, one hundred fourteen thousand, nine hundred eighty-one".
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