164308243 has 4 divisors (see below), whose sum is σ = 179245368. Its totient is φ = 149371120.

The previous prime is 164308201. The next prime is 164308259. The reversal of 164308243 is 342803461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 164308243 - 2¹⁷ = 164177171 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164308273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7468546 + ... + 7468567.

It is an arithmetic number, because the mean of its divisors is an integer number (44811342).

Almost surely, 2^164308243 is an apocalyptic number.

164308243 is a deficient number, since it is larger than the sum of its proper divisors (14937125).

164308243 is a wasteful number, since it uses less digits than its factorization.

164308243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14937124.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 164308243 is about 12818.2776924203. The cubic root of 164308243 is about 547.7130859508.

The spelling of 164308243 in words is "one hundred sixty-four million, three hundred eight thousand, two hundred forty-three".