164843218 has 4 divisors (see below), whose sum is σ = 247264830. Its totient is φ = 82421608.

The previous prime is 164843201. The next prime is 164843233. The reversal of 164843218 is 812348461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 132319009 + 32524209 = 11503^2 + 5703^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41210803 + ... + 41210806.

Almost surely, 2^164843218 is an apocalyptic number.

164843218 is a deficient number, since it is larger than the sum of its proper divisors (82421612).

164843218 is an equidigital number, since it uses as much as digits as its factorization.

164843218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82421611.

The product of its digits is 36864, while the sum is 37.

The square root of 164843218 is about 12839.1283972083. The cubic root of 164843218 is about 548.3068791932.

The spelling of 164843218 in words is "one hundred sixty-four million, eight hundred forty-three thousand, two hundred eighteen".