164137218 has 16 divisors (see below), whose sum is σ = 375170880. Its totient is φ = 46896336.

The previous prime is 164137199. The next prime is 164137241. The reversal of 164137218 is 812731461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1953973 + ... + 1954056.

It is an arithmetic number, because the mean of its divisors is an integer number (23448180).

Almost surely, 2^164137218 is an apocalyptic number.

164137218 is an abundant number, since it is smaller than the sum of its proper divisors (211033662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164137218 is a wasteful number, since it uses less digits than its factorization.

164137218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908041.

The product of its digits is 8064, while the sum is 33.

The square root of 164137218 is about 12811.6048175082. The cubic root of 164137218 is about 547.5229856283.

Adding to 164137218 its reverse (812731461), we get a palindrome (976868679).

The spelling of 164137218 in words is "one hundred sixty-four million, one hundred thirty-seven thousand, two hundred eighteen".