1730942816409 has 9 divisors (see below), whose sum is σ = 2500256435989. Its totient is φ = 1153959246300.

The previous prime is 1730942816389. The next prime is 1730942816423. The reversal of 1730942816409 is 9046182490371.

The square root of 1730942816409 is 1315653.

It is a perfect power (a square), and thus also a powerful number.

1730942816409 is a `hidden beast` number, since 1 + 73 + 0 + 94 + 2 + 81 + 6 + 409 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1730942816409 - 2²³ = 1730934427801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1730942816479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3727684 + ... + 4166234.

Almost surely, 2^{1730942816409} is an apocalyptic number.

1730942816409 is the 1315653-rd square number.

1730942816409 is the 657827-th centered octagonal number.

It is an amenable number.

1730942816409 is a deficient number, since it is larger than the sum of its proper divisors (769313619580).

1730942816409 is an frugal number, since it uses more digits than its factorization.

1730942816409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877108 (or 438554 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 1730942816409 in words is "one trillion, seven hundred thirty billion, nine hundred forty-two million, eight hundred sixteen thousand, four hundred nine".