3811001081 has 2 divisors, whose sum is σ = 3811001082. Its totient is φ = 3811001080.

The previous prime is 3811001023. The next prime is 3811001113. The reversal of 3811001081 is 1801001183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2903485456 + 907515625 = 53884^2 + 30125^2 .

It is an emirp because it is prime and its reverse (1801001183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3811001081 - 2⁶ = 3811001017 is a prime.

It is a super-2 number, since 2×3811001081² = 29047458478766337122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3811001011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1905500540 + 1905500541.

It is an arithmetic number, because the mean of its divisors is an integer number (1905500541).

Almost surely, 2^3811001081 is an apocalyptic number.

It is an amenable number.

3811001081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3811001081 is an equidigital number, since it uses as much as digits as its factorization.

3811001081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 23.

The square root of 3811001081 is about 61733.3060916067. The cubic root of 3811001081 is about 1561.9951845133.

The spelling of 3811001081 in words is "three billion, eight hundred eleven million, one thousand, eighty-one".