164442047 has 8 divisors (see below), whose sum is σ = 205018752. Its totient is φ = 128136600.

The previous prime is 164442041. The next prime is 164442067. The reversal of 164442047 is 740244461.

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

It is a cyclic number.

It is not a de Polignac number, because 164442047 - 2¹⁰ = 164441023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164442041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1067729 + ... + 1067882.

It is an arithmetic number, because the mean of its divisors is an integer number (25627344).

Almost surely, 2^164442047 is an apocalyptic number.

164442047 is a deficient number, since it is larger than the sum of its proper divisors (40576705).

164442047 is a wasteful number, since it uses less digits than its factorization.

164442047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135629.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 164442047 is about 12823.4958962055. The cubic root of 164442047 is about 547.8617218640.

The spelling of 164442047 in words is "one hundred sixty-four million, four hundred forty-two thousand, forty-seven".