1838405615743 has 2 divisors, whose sum is σ = 1838405615744. Its totient is φ = 1838405615742.

The previous prime is 1838405615693. The next prime is 1838405615773. The reversal of 1838405615743 is 3475165048381.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1838405615743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1838405615773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919202807871 + 919202807872.

It is an arithmetic number, because the mean of its divisors is an integer number (919202807872).

Almost surely, 2^{1838405615743} is an apocalyptic number.

1838405615743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838405615743 is an equidigital number, since it uses as much as digits as its factorization.

1838405615743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 1838405615743 in words is "one trillion, eight hundred thirty-eight billion, four hundred five million, six hundred fifteen thousand, seven hundred forty-three".