164623443 has 8 divisors (see below), whose sum is σ = 229041408. Its totient is φ = 104977224.

The previous prime is 164623411. The next prime is 164623451. The reversal of 164623443 is 344326461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 164623443 - 2⁵ = 164623411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164624443) 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, 1192855 + ... + 1192992.

It is an arithmetic number, because the mean of its divisors is an integer number (28630176).

Almost surely, 2^164623443 is an apocalyptic number.

164623443 is a deficient number, since it is larger than the sum of its proper divisors (64417965).

164623443 is a wasteful number, since it uses less digits than its factorization.

164623443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385873.

The product of its digits is 41472, while the sum is 33.

The square root of 164623443 is about 12830.5667450818. The cubic root of 164623443 is about 548.0630965674.

The spelling of 164623443 in words is "one hundred sixty-four million, six hundred twenty-three thousand, four hundred forty-three".