Base | Representation |
---|---|
bin | 1001100010111… |
… | …11010000111111 |
3 | 12120200120211101 |
4 | 10301133100333 |
5 | 131000110413 |
6 | 11540233531 |
7 | 1661454112 |
oct | 461372077 |
9 | 176616741 |
10 | 80081983 |
11 | 41227863 |
12 | 2299b8a7 |
13 | 1378b7b7 |
14 | a8c8579 |
15 | 706cedd |
hex | 4c5f43f |
80081983 has 2 divisors, whose sum is σ = 80081984. Its totient is φ = 80081982.
The previous prime is 80081957. The next prime is 80082001. The reversal of 80081983 is 38918008.
It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-80081983 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (80081083) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40040991 + 40040992.
It is an arithmetic number, because the mean of its divisors is an integer number (40040992).
Almost surely, 280081983 is an apocalyptic number.
80081983 is a deficient number, since it is larger than the sum of its proper divisors (1).
80081983 is an equidigital number, since it uses as much as digits as its factorization.
80081983 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 13824, while the sum is 37.
The square root of 80081983 is about 8948.8537254779. The cubic root of 80081983 is about 431.0340769384.
The spelling of 80081983 in words is "eighty million, eighty-one thousand, nine hundred eighty-three".
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