1398240627593 has 2 divisors, whose sum is σ = 1398240627594. Its totient is φ = 1398240627592.

The previous prime is 1398240627583. The next prime is 1398240627659. The reversal of 1398240627593 is 3957260428931.

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., 918430889104 + 479809738489 = 958348^2 + 692683^2 .

It is an emirp because it is prime and its reverse (3957260428931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1398240627593 - 2⁶ = 1398240627529 is a prime.

It is not a weakly prime, because it can be changed into another prime (1398240627523) 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, 699120313796 + 699120313797.

It is an arithmetic number, because the mean of its divisors is an integer number (699120313797).

It is a 1-persistent number, because it is pandigital, but 2⋅1398240627593 = 2796481255186 is not.

Almost surely, 2^{1398240627593} is an apocalyptic number.

It is an amenable number.

1398240627593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398240627593 is an equidigital number, since it uses as much as digits as its factorization.

1398240627593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19595520, while the sum is 59.

The spelling of 1398240627593 in words is "one trillion, three hundred ninety-eight billion, two hundred forty million, six hundred twenty-seven thousand, five hundred ninety-three".