164243305 has 8 divisors (see below), whose sum is σ = 199467072. Its totient is φ = 129811248.

The previous prime is 164243281. The next prime is 164243309. The reversal of 164243305 is 503342461.

164243305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 164243305 - 2¹¹ = 164241257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164243309) 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, 197469 + ... + 198298.

It is an arithmetic number, because the mean of its divisors is an integer number (24933384).

Almost surely, 2^164243305 is an apocalyptic number.

It is an amenable number.

164243305 is a deficient number, since it is larger than the sum of its proper divisors (35223767).

164243305 is an equidigital number, since it uses as much as digits as its factorization.

164243305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395855.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 164243305 is about 12815.7444184878. The cubic root of 164243305 is about 547.6409206140.

Adding to 164243305 its reverse (503342461), we get a palindrome (667585766).

The spelling of 164243305 in words is "one hundred sixty-four million, two hundred forty-three thousand, three hundred five".