388278602813 has 2 divisors, whose sum is σ = 388278602814. Its totient is φ = 388278602812.

The previous prime is 388278602801. The next prime is 388278602867. The reversal of 388278602813 is 318206872883.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214978740964 + 173299861849 = 463658^2 + 416293^2 .

It is an emirp because it is prime and its reverse (318206872883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388278602813 - 2⁴ = 388278602797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388278602713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194139301406 + 194139301407.

It is an arithmetic number, because the mean of its divisors is an integer number (194139301407).

Almost surely, 2^388278602813 is an apocalyptic number.

It is an amenable number.

388278602813 is a deficient number, since it is larger than the sum of its proper divisors (1).

388278602813 is an equidigital number, since it uses as much as digits as its factorization.

388278602813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 388278602813 in words is "three hundred eighty-eight billion, two hundred seventy-eight million, six hundred two thousand, eight hundred thirteen".