164232809 has 8 divisors (see below), whose sum is σ = 178140480. Its totient is φ = 150507216.

The previous prime is 164232799. The next prime is 164232821. The reversal of 164232809 is 908232461.

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 164232809 - 2¹⁶ = 164167273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164232109) 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 7 ways as a sum of consecutive naturals, for example, 43637 + ... + 47250.

It is an arithmetic number, because the mean of its divisors is an integer number (22267560).

Almost surely, 2^164232809 is an apocalyptic number.

It is an amenable number.

164232809 is a deficient number, since it is larger than the sum of its proper divisors (13907671).

164232809 is a wasteful number, since it uses less digits than its factorization.

164232809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91039.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 164232809 is about 12815.3349156392. The cubic root of 164232809 is about 547.6292546661.

The spelling of 164232809 in words is "one hundred sixty-four million, two hundred thirty-two thousand, eight hundred nine".