1205730734773 has 2 divisors, whose sum is σ = 1205730734774. Its totient is φ = 1205730734772.

The previous prime is 1205730734771. The next prime is 1205730734837. The reversal of 1205730734773 is 3774370375021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 807729992644 + 398000742129 = 898738^2 + 630873^2 .

It is a cyclic number.

It is not a de Polignac number, because 1205730734773 - 2¹ = 1205730734771 is a prime.

Together with 1205730734771, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1205730734771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602865367386 + 602865367387.

It is an arithmetic number, because the mean of its divisors is an integer number (602865367387).

Almost surely, 2^{1205730734773} is an apocalyptic number.

It is an amenable number.

1205730734773 is a deficient number, since it is larger than the sum of its proper divisors (1).

1205730734773 is an equidigital number, since it uses as much as digits as its factorization.

1205730734773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2593080, while the sum is 49.

The spelling of 1205730734773 in words is "one trillion, two hundred five billion, seven hundred thirty million, seven hundred thirty-four thousand, seven hundred seventy-three".