3818331435613 has 2 divisors, whose sum is σ = 3818331435614. Its totient is φ = 3818331435612.

The previous prime is 3818331435601. The next prime is 3818331435643. The reversal of 3818331435613 is 3165341338183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2066343000484 + 1751988435129 = 1437478^2 + 1323627^2 .

It is an emirp because it is prime and its reverse (3165341338183) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3818331435613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3818331435643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909165717806 + 1909165717807.

It is an arithmetic number, because the mean of its divisors is an integer number (1909165717807).

Almost surely, 2^{3818331435613} is an apocalyptic number.

It is an amenable number.

3818331435613 is a deficient number, since it is larger than the sum of its proper divisors (1).

3818331435613 is an equidigital number, since it uses as much as digits as its factorization.

3818331435613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 49.

The spelling of 3818331435613 in words is "three trillion, eight hundred eighteen billion, three hundred thirty-one million, four hundred thirty-five thousand, six hundred thirteen".