Base | Representation |
---|---|
bin | 101001010111101… |
… | …0001001000111011 |
3 | 10120201222221100020 |
4 | 1102233101020323 |
5 | 10320324411213 |
6 | 345424141523 |
7 | 46253563623 |
oct | 12257211073 |
9 | 3521887306 |
10 | 1388122683 |
11 | 652617132 |
12 | 328a678a3 |
13 | 19178058c |
14 | d24dd883 |
15 | 81cea923 |
hex | 52bd123b |
1388122683 has 16 divisors (see below), whose sum is σ = 1883784960. Its totient is φ = 909016416.
The previous prime is 1388122661. The next prime is 1388122693. The reversal of 1388122683 is 3862218831.
1388122683 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 1388122683 - 210 = 1388121659 is a prime.
It is not an unprimeable number, because it can be changed into a prime (1388122643) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62541 + ... + 81777.
It is an arithmetic number, because the mean of its divisors is an integer number (117736560).
Almost surely, 21388122683 is an apocalyptic number.
1388122683 is a deficient number, since it is larger than the sum of its proper divisors (495662277).
1388122683 is a wasteful number, since it uses less digits than its factorization.
1388122683 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19666.
The product of its digits is 110592, while the sum is 42.
The square root of 1388122683 is about 37257.5184761412. The cubic root of 1388122683 is about 1115.5163763428.
The spelling of 1388122683 in words is "one billion, three hundred eighty-eight million, one hundred twenty-two thousand, six hundred eighty-three".
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