3845137565813 has 2 divisors, whose sum is σ = 3845137565814. Its totient is φ = 3845137565812.

The previous prime is 3845137565693. The next prime is 3845137565827. The reversal of 3845137565813 is 3185657315483.

3845137565813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3830228667409 + 14908898404 = 1957097^2 + 122102^2 .

It is a cyclic number.

It is not a de Polignac number, because 3845137565813 - 2¹⁰ = 3845137564789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3845137567813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1922568782906 + 1922568782907.

It is an arithmetic number, because the mean of its divisors is an integer number (1922568782907).

Almost surely, 2^{3845137565813} is an apocalyptic number.

It is an amenable number.

3845137565813 is a deficient number, since it is larger than the sum of its proper divisors (1).

3845137565813 is an equidigital number, since it uses as much as digits as its factorization.

3845137565813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288000, while the sum is 59.

The spelling of 3845137565813 in words is "three trillion, eight hundred forty-five billion, one hundred thirty-seven million, five hundred sixty-five thousand, eight hundred thirteen".