388136318957 has 2 divisors, whose sum is σ = 388136318958. Its totient is φ = 388136318956.

The previous prime is 388136318917. The next prime is 388136318987. The reversal of 388136318957 is 759813631883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385813657321 + 2322661636 = 621139^2 + 48194^2 .

It is an emirp because it is prime and its reverse (759813631883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388136318957 - 2⁶ = 388136318893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 388136318957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388136318917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194068159478 + 194068159479.

It is an arithmetic number, because the mean of its divisors is an integer number (194068159479).

Almost surely, 2^388136318957 is an apocalyptic number.

It is an amenable number.

388136318957 is a deficient number, since it is larger than the sum of its proper divisors (1).

388136318957 is an equidigital number, since it uses as much as digits as its factorization.

388136318957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26127360, while the sum is 62.

The spelling of 388136318957 in words is "three hundred eighty-eight billion, one hundred thirty-six million, three hundred eighteen thousand, nine hundred fifty-seven".