| Base | Representation |
|---|---|
| bin | 10011100010001… |
| … | …00000000000001 |
| 3 | 102102022202201000 |
| 4 | 21301010000001 |
| 5 | 313421401020 |
| 6 | 24132002213 |
| 7 | 4026520260 |
| oct | 1161040001 |
| 9 | 372282630 |
| 10 | 163856385 |
| 11 | 84546800 |
| 12 | 46a60369 |
| 13 | 27c40b54 |
| 14 | 17a945d7 |
| 15 | e5ba090 |
| hex | 9c44001 |
163856385 has 96 divisors (see below), whose sum is σ = 366186240. Its totient is φ = 68048640.
The previous prime is 163856383. The next prime is 163856389. The reversal of 163856385 is 583658361.
163856385 is a `hidden beast` number, since 1 + 6 + 3 + 8 + 5 + 638 + 5 = 666.
It is not a de Polignac number, because 163856385 - 21 = 163856383 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is an alternating number because its digits alternate between odd and even.
It is a self number, because there is not a number n which added to its sum of digits gives 163856385.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (163856383) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 113629 + ... + 115061.
It is an arithmetic number, because the mean of its divisors is an integer number (3814440).
It is a Proth number, since it is equal to 10001 ⋅ 214 + 1 and 10001 < 214.
Almost surely, 2163856385 is an apocalyptic number.
163856385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
163856385 is an abundant number, since it is smaller than the sum of its proper divisors (202329855).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
163856385 is a wasteful number, since it uses less digits than its factorization.
163856385 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1476 (or 1459 counting only the distinct ones).
The product of its digits is 518400, while the sum is 45.
The square root of 163856385 is about 12800.6400230613. The cubic root of 163856385 is about 547.2105431852.
The spelling of 163856385 in words is "one hundred sixty-three million, eight hundred fifty-six thousand, three hundred eighty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.074 sec. • engine limits •