164444426 has 16 divisors (see below), whose sum is σ = 249630720. Its totient is φ = 81239760.

The previous prime is 164444419. The next prime is 164444459. The reversal of 164444426 is 624444461.

164444426 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 67640 + ... + 70028.

It is an arithmetic number, because the mean of its divisors is an integer number (15601920).

Almost surely, 2^164444426 is an apocalyptic number.

164444426 is a deficient number, since it is larger than the sum of its proper divisors (85186294).

164444426 is a wasteful number, since it uses less digits than its factorization.

164444426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789.

The product of its digits is 73728, while the sum is 35.

The square root of 164444426 is about 12823.5886552868. The cubic root of 164444426 is about 547.8643638419.

Adding to 164444426 its sum of digits (35), we get a palindrome (164444461).

Adding to 164444426 its reverse (624444461), we get a palindrome (788888887).

The spelling of 164444426 in words is "one hundred sixty-four million, four hundred forty-four thousand, four hundred twenty-six".