173730009 has 8 divisors (see below), whose sum is σ = 232297632. Its totient is φ = 115491200.

The previous prime is 173729993. The next prime is 173730023. The reversal of 173730009 is 900037371.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 173730009 - 2⁴ = 173729993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (173730049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80967 + ... + 83084.

It is an arithmetic number, because the mean of its divisors is an integer number (29037204).

Almost surely, 2^173730009 is an apocalyptic number.

It is an amenable number.

173730009 is a deficient number, since it is larger than the sum of its proper divisors (58567623).

173730009 is a wasteful number, since it uses less digits than its factorization.

173730009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164407.

The product of its (nonzero) digits is 3969, while the sum is 30.

The square root of 173730009 is about 13180.6680027986. The cubic root of 173730009 is about 557.9881133373.

The spelling of 173730009 in words is "one hundred seventy-three million, seven hundred thirty thousand, nine".