3668366881 has 2 divisors, whose sum is σ = 3668366882. Its totient is φ = 3668366880.

The previous prime is 3668366843. The next prime is 3668366941. The reversal of 3668366881 is 1886638663.

3668366881 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., 3449800225 + 218566656 = 58735^2 + 14784^2 .

It is a cyclic number.

It is not a de Polignac number, because 3668366881 - 2⁷ = 3668366753 is a prime.

It is a super-2 number, since 2×3668366881² = 26913831147235336322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3668366381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834183440 + 1834183441.

It is an arithmetic number, because the mean of its divisors is an integer number (1834183441).

Almost surely, 2^3668366881 is an apocalyptic number.

It is an amenable number.

3668366881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3668366881 is an equidigital number, since it uses as much as digits as its factorization.

3668366881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 55.

The square root of 3668366881 is about 60567.0445126721. The cubic root of 3668366881 is about 1542.2599753836.

The spelling of 3668366881 in words is "three billion, six hundred sixty-eight million, three hundred sixty-six thousand, eight hundred eighty-one".