164601443 has 4 divisors (see below), whose sum is σ = 165227568. Its totient is φ = 163975320.

The previous prime is 164601431. The next prime is 164601461. The reversal of 164601443 is 344106461.

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 164601443 - 2¹⁸ = 164339299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164601403) 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 3 ways as a sum of consecutive naturals, for example, 312668 + ... + 313193.

It is an arithmetic number, because the mean of its divisors is an integer number (41306892).

Almost surely, 2^164601443 is an apocalyptic number.

164601443 is a deficient number, since it is larger than the sum of its proper divisors (626125).

164601443 is an equidigital number, since it uses as much as digits as its factorization.

164601443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626124.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 164601443 is about 12829.7093887586. The cubic root of 164601443 is about 548.0386814030.

The spelling of 164601443 in words is "one hundred sixty-four million, six hundred one thousand, four hundred forty-three".