3808545479581 has 2 divisors, whose sum is σ = 3808545479582. Its totient is φ = 3808545479580.

The previous prime is 3808545479569. The next prime is 3808545479587. The reversal of 3808545479581 is 1859745458083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2849144819481 + 959400660100 = 1687941^2 + 979490^2 .

It is a cyclic number.

It is not a de Polignac number, because 3808545479581 - 2¹¹ = 3808545477533 is a prime.

It is a super-2 number, since 2×3808545479581² (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 (3808545479587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1904272739790 + 1904272739791.

It is an arithmetic number, because the mean of its divisors is an integer number (1904272739791).

Almost surely, 2^{3808545479581} is an apocalyptic number.

It is an amenable number.

3808545479581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3808545479581 is an equidigital number, since it uses as much as digits as its factorization.

3808545479581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536000, while the sum is 67.

The spelling of 3808545479581 in words is "three trillion, eight hundred eight billion, five hundred forty-five million, four hundred seventy-nine thousand, five hundred eighty-one".