164004445 has 8 divisors (see below), whose sum is σ = 214696800. Its totient is φ = 119275920.

The previous prime is 164004439. The next prime is 164004473. The reversal of 164004445 is 544400461.

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

It is not a de Polignac number, because 164004445 - 2¹³ = 163996253 is a prime.

It is a congruent number.

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, 1490895 + ... + 1491004.

It is an arithmetic number, because the mean of its divisors is an integer number (26837100).

Almost surely, 2^164004445 is an apocalyptic number.

It is an amenable number.

164004445 is a deficient number, since it is larger than the sum of its proper divisors (50692355).

164004445 is a wasteful number, since it uses less digits than its factorization.

164004445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981915.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 164004445 is about 12806.4220217827. The cubic root of 164004445 is about 547.3753126817.

The spelling of 164004445 in words is "one hundred sixty-four million, four thousand, four hundred forty-five".