164206009 has 8 divisors (see below), whose sum is σ = 189671328. Its totient is φ = 140496960.

The previous prime is 164205997. The next prime is 164206013. The reversal of 164206009 is 900602461.

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 164206009 - 2¹¹ = 164203961 is a prime.

It is a super-2 number, since 2×164206009² = 53927226783416162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164206099) 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, 438867 + ... + 439240.

It is an arithmetic number, because the mean of its divisors is an integer number (23708916).

Almost surely, 2^164206009 is an apocalyptic number.

It is an amenable number.

164206009 is a deficient number, since it is larger than the sum of its proper divisors (25465319).

164206009 is a wasteful number, since it uses less digits than its factorization.

164206009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878135.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 164206009 is about 12814.2892506764. The cubic root of 164206009 is about 547.5994651201.

The spelling of 164206009 in words is "one hundred sixty-four million, two hundred six thousand, nine".