3668981441 has 2 divisors, whose sum is σ = 3668981442. Its totient is φ = 3668981440.

The previous prime is 3668981419. The next prime is 3668981443. The reversal of 3668981441 is 1441898663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3587530816 + 81450625 = 59896^2 + 9025^2 .

It is a cyclic number.

It is not a de Polignac number, because 3668981441 - 2²⁶ = 3601872577 is a prime.

It is a super-2 number, since 2×3668981441² = 26922849628804872962, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 3668981443, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3668981441.

It is not a weakly prime, because it can be changed into another prime (3668981443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1834490720 + 1834490721.

It is an arithmetic number, because the mean of its divisors is an integer number (1834490721).

Almost surely, 2^3668981441 is an apocalyptic number.

It is an amenable number.

3668981441 is a deficient number, since it is larger than the sum of its proper divisors (1).

3668981441 is an equidigital number, since it uses as much as digits as its factorization.

3668981441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 50.

The square root of 3668981441 is about 60572.1176862754. The cubic root of 3668981441 is about 1542.3460953017.

The spelling of 3668981441 in words is "three billion, six hundred sixty-eight million, nine hundred eighty-one thousand, four hundred forty-one".