Base | Representation |
---|---|
bin | 100101111100… |
… | …0000100011111 |
3 | 1101102112120211 |
4 | 1023320010133 |
5 | 20042443323 |
6 | 1550153251 |
7 | 331031455 |
oct | 113700437 |
9 | 41375524 |
10 | 19890463 |
11 | 10255aaa |
12 | 67b2827 |
13 | 4175608 |
14 | 28da9d5 |
15 | 1b2d70d |
hex | 12f811f |
19890463 has 2 divisors, whose sum is σ = 19890464. Its totient is φ = 19890462.
The previous prime is 19890461. The next prime is 19890503. The reversal of 19890463 is 36409891.
It is an a-pointer prime, because the next prime (19890503) can be obtained adding 19890463 to its sum of digits (40).
It is a weak prime.
It is a cyclic number.
It is not a de Polignac number, because 19890463 - 21 = 19890461 is a prime.
Together with 19890461, it forms a pair of twin primes.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (19890461) 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 as a sum of consecutive naturals, namely, 9945231 + 9945232.
It is an arithmetic number, because the mean of its divisors is an integer number (9945232).
Almost surely, 219890463 is an apocalyptic number.
19890463 is a deficient number, since it is larger than the sum of its proper divisors (1).
19890463 is an equidigital number, since it uses as much as digits as its factorization.
19890463 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 46656, while the sum is 40.
The square root of 19890463 is about 4459.8725318107. The cubic root of 19890463 is about 270.9453056108.
The spelling of 19890463 in words is "nineteen million, eight hundred ninety thousand, four hundred sixty-three".
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