3861636013 has 2 divisors, whose sum is σ = 3861636014. Its totient is φ = 3861636012.

The previous prime is 3861636007. The next prime is 3861636067. The reversal of 3861636013 is 3106361683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3466501129 + 395134884 = 58877^2 + 19878^2 .

It is a cyclic number.

It is not a de Polignac number, because 3861636013 - 2⁹ = 3861635501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3861636913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930818006 + 1930818007.

It is an arithmetic number, because the mean of its divisors is an integer number (1930818007).

Almost surely, 2^3861636013 is an apocalyptic number.

It is an amenable number.

3861636013 is a deficient number, since it is larger than the sum of its proper divisors (1).

3861636013 is an equidigital number, since it uses as much as digits as its factorization.

3861636013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 3861636013 is about 62142.0631537126. The cubic root of 3861636013 is about 1568.8825961201.

Adding to 3861636013 its reverse (3106361683), we get a palindrome (6967997696).

The spelling of 3861636013 in words is "three billion, eight hundred sixty-one million, six hundred thirty-six thousand, thirteen".