Base | Representation |
---|---|
bin | 10110111110000… |
… | …111001101100011 |
3 | 222212011101122111 |
4 | 112332013031203 |
5 | 1242124144334 |
6 | 102124020151 |
7 | 12356454256 |
oct | 2676071543 |
9 | 885141574 |
10 | 385381219 |
11 | 1885a0683 |
12 | a9091657 |
13 | 61ac3632 |
14 | 3927b09d |
15 | 23c77064 |
hex | 16f87363 |
385381219 has 4 divisors (see below), whose sum is σ = 385448544. Its totient is φ = 385313896.
The previous prime is 385381207. The next prime is 385381229. The reversal of 385381219 is 912183583.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 385381219 - 29 = 385380707 is a prime.
It is a super-2 number, since 2×3853812192 = 297037367915851922, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (385381229) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24187 + ... + 36820.
It is an arithmetic number, because the mean of its divisors is an integer number (96362136).
Almost surely, 2385381219 is an apocalyptic number.
385381219 is a deficient number, since it is larger than the sum of its proper divisors (67325).
385381219 is an equidigital number, since it uses as much as digits as its factorization.
385381219 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 67324.
The product of its digits is 51840, while the sum is 40.
The square root of 385381219 is about 19631.1288264328. The cubic root of 385381219 is about 727.7186670809.
The spelling of 385381219 in words is "three hundred eighty-five million, three hundred eighty-one thousand, two hundred nineteen".
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