Base | Representation |
---|---|
bin | 111010100000000… |
… | …011011111010101 |
3 | 2112101211102102001 |
4 | 322200003133111 |
5 | 4002224401204 |
6 | 241220315301 |
7 | 33215311615 |
oct | 7240033725 |
9 | 2471742361 |
10 | 981481429 |
11 | 464025585 |
12 | 234842b31 |
13 | 128455156 |
14 | 944caa45 |
15 | 5b2744a4 |
hex | 3a8037d5 |
981481429 has 2 divisors, whose sum is σ = 981481430. Its totient is φ = 981481428.
The previous prime is 981481393. The next prime is 981481441. The reversal of 981481429 is 924184189.
981481429 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., 654848100 + 326633329 = 25590^2 + 18073^2 .
It is an emirp because it is prime and its reverse (924184189) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 981481429 - 27 = 981481301 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (981481469) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490740714 + 490740715.
It is an arithmetic number, because the mean of its divisors is an integer number (490740715).
Almost surely, 2981481429 is an apocalyptic number.
It is an amenable number.
981481429 is a deficient number, since it is larger than the sum of its proper divisors (1).
981481429 is an equidigital number, since it uses as much as digits as its factorization.
981481429 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 165888, while the sum is 46.
The square root of 981481429 is about 31328.6040065624. The cubic root of 981481429 is about 993.7886419108.
The spelling of 981481429 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, four hundred twenty-nine".
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