164218273 has 8 divisors (see below), whose sum is σ = 175442720. Its totient is φ = 153252000.

The previous prime is 164218259. The next prime is 164218277. The reversal of 164218273 is 372812461.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164218273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164218277) by changing a digit.

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, 63228 + ... + 65773.

It is an arithmetic number, because the mean of its divisors is an integer number (21930340).

Almost surely, 2^164218273 is an apocalyptic number.

It is an amenable number.

164218273 is a deficient number, since it is larger than the sum of its proper divisors (11224447).

164218273 is a wasteful number, since it uses less digits than its factorization.

164218273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129087.

The product of its digits is 16128, while the sum is 34.

The square root of 164218273 is about 12814.7677700378. The cubic root of 164218273 is about 547.6130975743.

The spelling of 164218273 in words is "one hundred sixty-four million, two hundred eighteen thousand, two hundred seventy-three".