| Base | Representation |
|---|---|
| bin | 100110110001… |
| … | …010111100001 |
| 3 | 201010100221122 |
| 4 | 212301113201 |
| 5 | 10100214211 |
| 6 | 1001502025 |
| 7 | 152250503 |
| oct | 46612741 |
| 9 | 21110848 |
| 10 | 10163681 |
| 11 | 5812140 |
| 12 | 34a1915 |
| 13 | 214b218 |
| 14 | 14c7d73 |
| 15 | d5b6db |
| hex | 9b15e1 |
10163681 has 4 divisors (see below), whose sum is σ = 11087664. Its totient is φ = 9239700.
The previous prime is 10163669. The next prime is 10163701. The reversal of 10163681 is 18636101.
10163681 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.
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, and also an emirpimes, since its reverse is a distinct semiprime: 18636101 = 11 ⋅1694191.
It is a cyclic number.
It is not a de Polignac number, because 10163681 - 210 = 10162657 is a prime.
It is a super-2 number, since 2×101636812 = 206600822939522, which contains 22 as substring.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 10163681.
It is not an unprimeable number, because it can be changed into a prime (10163581) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461975 + ... + 461996.
It is an arithmetic number, because the mean of its divisors is an integer number (2771916).
Almost surely, 210163681 is an apocalyptic number.
10163681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
10163681 is a deficient number, since it is larger than the sum of its proper divisors (923983).
10163681 is an equidigital number, since it uses as much as digits as its factorization.
10163681 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 923982.
The product of its (nonzero) digits is 864, while the sum is 26.
The square root of 10163681 is about 3188.0528540161. The cubic root of 10163681 is about 216.6125800563.
Adding to 10163681 its reverse (18636101), we get a palindrome (28799782).
The spelling of 10163681 in words is "ten million, one hundred sixty-three thousand, six hundred eighty-one".
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