1388819450653 has 2 divisors, whose sum is σ = 1388819450654. Its totient is φ = 1388819450652.

The previous prime is 1388819450633. The next prime is 1388819450729. The reversal of 1388819450653 is 3560549188831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 972564798969 + 416254651684 = 986187^2 + 645178^2 .

It is an emirp because it is prime and its reverse (3560549188831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1388819450653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1388819450591 and 1388819450600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1388819450633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694409725326 + 694409725327.

It is an arithmetic number, because the mean of its divisors is an integer number (694409725327).

Almost surely, 2^{1388819450653} is an apocalyptic number.

It is an amenable number.

1388819450653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1388819450653 is an equidigital number, since it uses as much as digits as its factorization.

1388819450653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24883200, while the sum is 61.

The spelling of 1388819450653 in words is "one trillion, three hundred eighty-eight billion, eight hundred nineteen million, four hundred fifty thousand, six hundred fifty-three".