Base | Representation |
---|---|
bin | 100100001001000101… |
… | …011101011010111111 |
3 | 10201011112110120000020 |
4 | 210021011131122333 |
5 | 1113434111204324 |
6 | 25454443303223 |
7 | 2542451115030 |
oct | 441105353277 |
9 | 121145416006 |
10 | 38807131839 |
11 | 15504683593 |
12 | 763051ab13 |
13 | 3875bb7308 |
14 | 1c41db6a87 |
15 | 1021e09679 |
hex | 90915d6bf |
38807131839 has 16 divisors (see below), whose sum is σ = 59138531328. Its totient is φ = 22174058592.
The previous prime is 38807131793. The next prime is 38807131859. The reversal of 38807131839 is 93813170883.
It is not a de Polignac number, because 38807131839 - 231 = 36659648191 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 38807131791 and 38807131800.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (38807131859) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327789 + ... + 430185.
It is an arithmetic number, because the mean of its divisors is an integer number (3696158208).
Almost surely, 238807131839 is an apocalyptic number.
38807131839 is a deficient number, since it is larger than the sum of its proper divisors (20331399489).
38807131839 is a wasteful number, since it uses less digits than its factorization.
38807131839 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 120454.
The product of its (nonzero) digits is 870912, while the sum is 51.
The spelling of 38807131839 in words is "thirty-eight billion, eight hundred seven million, one hundred thirty-one thousand, eight hundred thirty-nine".
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