1338493537687 has 2 divisors, whose sum is σ = 1338493537688. Its totient is φ = 1338493537686.

The previous prime is 1338493537637. The next prime is 1338493537729. The reversal of 1338493537687 is 7867353948331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1338493537687 - 2¹⁵ = 1338493504919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1338493537637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 669246768843 + 669246768844.

It is an arithmetic number, because the mean of its divisors is an integer number (669246768844).

Almost surely, 2^{1338493537687} is an apocalyptic number.

1338493537687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1338493537687 is an equidigital number, since it uses as much as digits as its factorization.

1338493537687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 274337280, while the sum is 67.

The spelling of 1338493537687 in words is "one trillion, three hundred thirty-eight billion, four hundred ninety-three million, five hundred thirty-seven thousand, six hundred eighty-seven".