Base | Representation |
---|---|
bin | 10000011010100110… |
… | …01000100000011101 |
3 | 211202012022112021201 |
4 | 20031103020200131 |
5 | 121022120211411 |
6 | 4014302155501 |
7 | 431252502634 |
oct | 101523104035 |
9 | 24665275251 |
10 | 8813053981 |
11 | 3812814996 |
12 | 185b582b91 |
13 | aa5b16954 |
14 | 5d867051b |
15 | 368aa03c1 |
hex | 20d4c881d |
8813053981 has 4 divisors (see below), whose sum is σ = 8813563200. Its totient is φ = 8812544764.
The previous prime is 8813053979. The next prime is 8813053987. The reversal of 8813053981 is 1893503188.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 8813053981 - 21 = 8813053979 is a prime.
It is a super-2 number, since 2×88130539812 (a number of 21 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8813053987) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227701 + ... + 263578.
It is an arithmetic number, because the mean of its divisors is an integer number (2203390800).
Almost surely, 28813053981 is an apocalyptic number.
It is an amenable number.
8813053981 is a deficient number, since it is larger than the sum of its proper divisors (509219).
8813053981 is a wasteful number, since it uses less digits than its factorization.
8813053981 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 509218.
The product of its (nonzero) digits is 207360, while the sum is 46.
The square root of 8813053981 is about 93877.8673649972. The cubic root of 8813053981 is about 2065.5805875301.
The spelling of 8813053981 in words is "eight billion, eight hundred thirteen million, fifty-three thousand, nine hundred eighty-one".
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