3811081228693 has 2 divisors, whose sum is σ = 3811081228694. Its totient is φ = 3811081228692.

The previous prime is 3811081228687. The next prime is 3811081228729. The reversal of 3811081228693 is 3968221801183.

It is a happy number.

3811081228693 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., 3548257877124 + 262823351569 = 1883682^2 + 512663^2 .

It is a cyclic number.

It is not a de Polignac number, because 3811081228693 - 2³⁷ = 3673642275221 is a prime.

It is a super-2 number, since 2×3811081228693² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3811081228693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3811081228193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1905540614346 + 1905540614347.

It is an arithmetic number, because the mean of its divisors is an integer number (1905540614347).

Almost surely, 2^{3811081228693} is an apocalyptic number.

It is an amenable number.

3811081228693 is a deficient number, since it is larger than the sum of its proper divisors (1).

3811081228693 is an equidigital number, since it uses as much as digits as its factorization.

3811081228693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 3811081228693 in words is "three trillion, eight hundred eleven billion, eighty-one million, two hundred twenty-eight thousand, six hundred ninety-three".