Base | Representation |
---|---|
bin | 1011000110101110… |
… | …0111111011100101 |
3 | 21200202021122022211 |
4 | 2301223213323211 |
5 | 22101114043411 |
6 | 1211445123421 |
7 | 133605051535 |
oct | 26153477345 |
9 | 7622248284 |
10 | 2981002981 |
11 | 129a775730 |
12 | 6b23b9571 |
13 | 3867927b8 |
14 | 203c9d4c5 |
15 | 126a90221 |
hex | b1ae7ee5 |
2981002981 has 16 divisors (see below), whose sum is σ = 3296653056. Its totient is φ = 2673000000.
The previous prime is 2981002979. The next prime is 2981003027. The reversal of 2981002981 is 1892001892.
It is not a de Polignac number, because 2981002981 - 21 = 2981002979 is a prime.
It is a super-2 number, since 2×29810029812 = 17772757545461772722, which contains 22 as substring.
It is a deceptive number, since it divides R2981002980.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2981003981) 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, 296131 + ... + 306031.
It is an arithmetic number, because the mean of its divisors is an integer number (206040816).
Almost surely, 22981002981 is an apocalyptic number.
It is an amenable number.
2981002981 is a deficient number, since it is larger than the sum of its proper divisors (315650075).
2981002981 is a wasteful number, since it uses less digits than its factorization.
2981002981 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10284.
The product of its (nonzero) digits is 20736, while the sum is 40.
The square root of 2981002981 is about 54598.5620781354. The cubic root of 2981002981 is about 1439.1988504312.
It can be divided in two parts, 298100 and 2981, that multiplied together give a square (888636100 = 298102).
The spelling of 2981002981 in words is "two billion, nine hundred eighty-one million, two thousand, nine hundred eighty-one".
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