1730728733 has 2 divisors, whose sum is σ = 1730728734. Its totient is φ = 1730728732.

The previous prime is 1730728723. The next prime is 1730728739. The reversal of 1730728733 is 3378270371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1707177124 + 23551609 = 41318^2 + 4853^2 .

It is a cyclic number.

It is not a de Polignac number, because 1730728733 - 2⁶ = 1730728669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1730728739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 865364366 + 865364367.

It is an arithmetic number, because the mean of its divisors is an integer number (865364367).

Almost surely, 2^1730728733 is an apocalyptic number.

It is an amenable number.

1730728733 is a deficient number, since it is larger than the sum of its proper divisors (1).

1730728733 is an equidigital number, since it uses as much as digits as its factorization.

1730728733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 1730728733 is about 41602.0279914333. The cubic root of 1730728733 is about 1200.6313189628.

The spelling of 1730728733 in words is "one billion, seven hundred thirty million, seven hundred twenty-eight thousand, seven hundred thirty-three".