1746320542789 has 2 divisors, whose sum is σ = 1746320542790. Its totient is φ = 1746320542788.

The previous prime is 1746320542699. The next prime is 1746320542843. The reversal of 1746320542789 is 9872450236471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1275957753889 + 470362788900 = 1129583^2 + 685830^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1746320542789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1746320542189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 873160271394 + 873160271395.

It is an arithmetic number, because the mean of its divisors is an integer number (873160271395).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1746320542789 = 3492641085578, but 3⋅1746320542789 = 5238961628367 is not.

Almost surely, 2^{1746320542789} is an apocalyptic number.

It is an amenable number.

1746320542789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1746320542789 is an equidigital number, since it uses as much as digits as its factorization.

1746320542789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 1746320542789 in words is "one trillion, seven hundred forty-six billion, three hundred twenty million, five hundred forty-two thousand, seven hundred eighty-nine".