1730649457 has 2 divisors, whose sum is σ = 1730649458. Its totient is φ = 1730649456.

The previous prime is 1730649451. The next prime is 1730649497. The reversal of 1730649457 is 7549460371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1645438096 + 85211361 = 40564^2 + 9231^2 .

It is a cyclic number.

It is not a de Polignac number, because 1730649457 - 2³ = 1730649449 is a prime.

It is not a weakly prime, because it can be changed into another prime (1730649451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 865324728 + 865324729.

It is an arithmetic number, because the mean of its divisors is an integer number (865324729).

Almost surely, 2^1730649457 is an apocalyptic number.

It is an amenable number.

1730649457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1730649457 is an equidigital number, since it uses as much as digits as its factorization.

1730649457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 1730649457 is about 41601.0751904323. The cubic root of 1730649457 is about 1200.6129870506.

The spelling of 1730649457 in words is "one billion, seven hundred thirty million, six hundred forty-nine thousand, four hundred fifty-seven".