3836205681641 has 2 divisors, whose sum is σ = 3836205681642. Its totient is φ = 3836205681640.

The previous prime is 3836205681589. The next prime is 3836205681661. The reversal of 3836205681641 is 1461865026383.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2031468687616 + 1804736994025 = 1425296^2 + 1343405^2 .

It is an emirp because it is prime and its reverse (1461865026383) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3836205681641 is a prime.

It is not a weakly prime, because it can be changed into another prime (3836205681661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1918102840820 + 1918102840821.

It is an arithmetic number, because the mean of its divisors is an integer number (1918102840821).

Almost surely, 2^{3836205681641} is an apocalyptic number.

It is an amenable number.

3836205681641 is a deficient number, since it is larger than the sum of its proper divisors (1).

3836205681641 is an equidigital number, since it uses as much as digits as its factorization.

3836205681641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 3836205681641 in words is "three trillion, eight hundred thirty-six billion, two hundred five million, six hundred eighty-one thousand, six hundred forty-one".