Base | Representation |
---|---|
bin | 101001001001001… |
… | …0011101010011001 |
3 | 10120012201020021220 |
4 | 1102102103222121 |
5 | 10311403441331 |
6 | 344553322253 |
7 | 46132214154 |
oct | 12222235231 |
9 | 3505636256 |
10 | 1380530841 |
11 | 649301288 |
12 | 326406389 |
13 | 190022b71 |
14 | d14c4c9b |
15 | 812eb296 |
hex | 52493a99 |
1380530841 has 4 divisors (see below), whose sum is σ = 1840707792. Its totient is φ = 920353892.
The previous prime is 1380530839. The next prime is 1380530881. The reversal of 1380530841 is 1480350831.
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: 1480350831 = 3 ⋅493450277.
It is a cyclic number.
It is not a de Polignac number, because 1380530841 - 21 = 1380530839 is a prime.
It is not an unprimeable number, because it can be changed into a prime (1380530821) 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, 230088471 + ... + 230088476.
It is an arithmetic number, because the mean of its divisors is an integer number (460176948).
Almost surely, 21380530841 is an apocalyptic number.
It is an amenable number.
1380530841 is a deficient number, since it is larger than the sum of its proper divisors (460176951).
1380530841 is an equidigital number, since it uses as much as digits as its factorization.
1380530841 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 460176950.
The product of its (nonzero) digits is 11520, while the sum is 33.
The square root of 1380530841 is about 37155.4954347267. The cubic root of 1380530841 is about 1113.4790179415.
The spelling of 1380530841 in words is "one billion, three hundred eighty million, five hundred thirty thousand, eight hundred forty-one".
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