3800801861 has 2 divisors, whose sum is σ = 3800801862. Its totient is φ = 3800801860.

The previous prime is 3800801839. The next prime is 3800801897. The reversal of 3800801861 is 1681080083.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2673924100 + 1126877761 = 51710^2 + 33569^2 .

It is an emirp because it is prime and its reverse (1681080083) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3800801861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3800801831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1900400930 + 1900400931.

It is an arithmetic number, because the mean of its divisors is an integer number (1900400931).

Almost surely, 2^3800801861 is an apocalyptic number.

It is an amenable number.

3800801861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3800801861 is an equidigital number, since it uses as much as digits as its factorization.

3800801861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 3800801861 is about 61650.6436381649. The cubic root of 3800801861 is about 1560.6005058543.

The spelling of 3800801861 in words is "three billion, eight hundred million, eight hundred one thousand, eight hundred sixty-one".