164422172 has 12 divisors (see below), whose sum is σ = 289103976. Its totient is φ = 81821040.

The previous prime is 164422163. The next prime is 164422211. The reversal of 164422172 is 271224461.

It is a super-3 number, since 3×164422172³ (a number of 26 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 96563 + ... + 98250.

It is an arithmetic number, because the mean of its divisors is an integer number (24091998).

Almost surely, 2^164422172 is an apocalyptic number.

It is an amenable number.

164422172 is a deficient number, since it is larger than the sum of its proper divisors (124681804).

164422172 is a wasteful number, since it uses less digits than its factorization.

164422172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195028 (or 195026 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 164422172 is about 12822.7209281026. The cubic root of 164422172 is about 547.8396488589.

The spelling of 164422172 in words is "one hundred sixty-four million, four hundred twenty-two thousand, one hundred seventy-two".