1381361688593 has 2 divisors, whose sum is σ = 1381361688594. Its totient is φ = 1381361688592.

The previous prime is 1381361688559. The next prime is 1381361688673. The reversal of 1381361688593 is 3958861631831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1057672378624 + 323689309969 = 1028432^2 + 568937^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381361688593 - 2⁸ = 1381361688337 is a prime.

It is a super-2 number, since 2×1381361688593² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1381361685593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690680844296 + 690680844297.

It is an arithmetic number, because the mean of its divisors is an integer number (690680844297).

Almost surely, 2^{1381361688593} is an apocalyptic number.

It is an amenable number.

1381361688593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381361688593 is an equidigital number, since it uses as much as digits as its factorization.

1381361688593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22394880, while the sum is 62.

The spelling of 1381361688593 in words is "one trillion, three hundred eighty-one billion, three hundred sixty-one million, six hundred eighty-eight thousand, five hundred ninety-three".