164443004 has 24 divisors (see below), whose sum is σ = 315705600. Its totient is φ = 74325680.

The previous prime is 164442979. The next prime is 164443067. The reversal of 164443004 is 400344461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2564 + ... + 18315.

It is an arithmetic number, because the mean of its divisors is an integer number (13154400).

Almost surely, 2^164443004 is an apocalyptic number.

It is an amenable number.

164443004 is a deficient number, since it is larger than the sum of its proper divisors (151262596).

164443004 is a wasteful number, since it uses less digits than its factorization.

164443004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21073 (or 21071 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 164443004 is about 12823.5332104689. The cubic root of 164443004 is about 547.8627846552.

Adding to 164443004 its reverse (400344461), we get a palindrome (564787465).

The spelling of 164443004 in words is "one hundred sixty-four million, four hundred forty-three thousand, four".