1381644750743 has 2 divisors, whose sum is σ = 1381644750744. Its totient is φ = 1381644750742.

The previous prime is 1381644750721. The next prime is 1381644750751. The reversal of 1381644750743 is 3470574461831.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3470574461831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381644750743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381644750443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690822375371 + 690822375372.

It is an arithmetic number, because the mean of its divisors is an integer number (690822375372).

Almost surely, 2^{1381644750743} is an apocalyptic number.

1381644750743 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381644750743 is an equidigital number, since it uses as much as digits as its factorization.

1381644750743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 1381644750743 in words is "one trillion, three hundred eighty-one billion, six hundred forty-four million, seven hundred fifty thousand, seven hundred forty-three".