2838506847581 has 2 divisors, whose sum is σ = 2838506847582. Its totient is φ = 2838506847580.

The previous prime is 2838506847559. The next prime is 2838506847641. The reversal of 2838506847581 is 1857486058382.

2838506847581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2157106126681 + 681400720900 = 1468709^2 + 825470^2 .

It is a cyclic number.

It is not a de Polignac number, because 2838506847581 - 2³⁰ = 2837433105757 is a prime.

It is a super-2 number, since 2×2838506847581² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2838506847521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1419253423790 + 1419253423791.

It is an arithmetic number, because the mean of its divisors is an integer number (1419253423791).

Almost surely, 2^{2838506847581} is an apocalyptic number.

It is an amenable number.

2838506847581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2838506847581 is an equidigital number, since it uses as much as digits as its factorization.

2838506847581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103219200, while the sum is 65.

The spelling of 2838506847581 in words is "two trillion, eight hundred thirty-eight billion, five hundred six million, eight hundred forty-seven thousand, five hundred eighty-one".