3845904703213 has 2 divisors, whose sum is σ = 3845904703214. Its totient is φ = 3845904703212.

The previous prime is 3845904703187. The next prime is 3845904703253. The reversal of 3845904703213 is 3123074095483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2096046659529 + 1749858043684 = 1447773^2 + 1322822^2 .

It is a cyclic number.

It is not a de Polignac number, because 3845904703213 - 2⁴¹ = 1646881447661 is a prime.

It is a super-2 number, since 2×3845904703213² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3845904703253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1922952351606 + 1922952351607.

It is an arithmetic number, because the mean of its divisors is an integer number (1922952351607).

Almost surely, 2^{3845904703213} is an apocalyptic number.

It is an amenable number.

3845904703213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3845904703213 is an equidigital number, since it uses as much as digits as its factorization.

3845904703213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 49.

Adding to 3845904703213 its reverse (3123074095483), we get a palindrome (6968978798696).

The spelling of 3845904703213 in words is "three trillion, eight hundred forty-five billion, nine hundred four million, seven hundred three thousand, two hundred thirteen".