3808857281 has 2 divisors, whose sum is σ = 3808857282. Its totient is φ = 3808857280.

The previous prime is 3808857233. The next prime is 3808857317. The reversal of 3808857281 is 1827588083.

3808857281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3044832400 + 764024881 = 55180^2 + 27641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3808857281 is a prime.

It is a super-2 number, since 2×3808857281² = 29014787574053425922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3808857181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1904428640 + 1904428641.

It is an arithmetic number, because the mean of its divisors is an integer number (1904428641).

Almost surely, 2^3808857281 is an apocalyptic number.

It is an amenable number.

3808857281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3808857281 is an equidigital number, since it uses as much as digits as its factorization.

3808857281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 860160, while the sum is 50.

The square root of 3808857281 is about 61715.9402504734. The cubic root of 3808857281 is about 1561.7022401926.

The spelling of 3808857281 in words is "three billion, eight hundred eight million, eight hundred fifty-seven thousand, two hundred eighty-one".