2816538481 has 2 divisors, whose sum is σ = 2816538482. Its totient is φ = 2816538480.

The previous prime is 2816538479. The next prime is 2816538509. The reversal of 2816538481 is 1848356182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1767361600 + 1049176881 = 42040^2 + 32391^2 .

It is a cyclic number.

It is not a de Polignac number, because 2816538481 - 2¹ = 2816538479 is a prime.

It is a super-2 number, since 2×2816538481² = 15865778029907574722, which contains 22 as substring.

Together with 2816538479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2816538181) 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 as a sum of consecutive naturals, namely, 1408269240 + 1408269241.

It is an arithmetic number, because the mean of its divisors is an integer number (1408269241).

Almost surely, 2^2816538481 is an apocalyptic number.

It is an amenable number.

2816538481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2816538481 is an equidigital number, since it uses as much as digits as its factorization.

2816538481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 368640, while the sum is 46.

The square root of 2816538481 is about 53071.0700947324. The cubic root of 2816538481 is about 1412.2293390709.

The spelling of 2816538481 in words is "two billion, eight hundred sixteen million, five hundred thirty-eight thousand, four hundred eighty-one".