164218516 has 24 divisors (see below), whose sum is σ = 358295616. Its totient is φ = 63981120.

The previous prime is 164218513. The next prime is 164218529. The reversal of 164218516 is 615812461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164218511) 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, 266281 + ... + 266896.

It is an arithmetic number, because the mean of its divisors is an integer number (14928984).

Almost surely, 2^164218516 is an apocalyptic number.

It is an amenable number.

164218516 is an abundant number, since it is smaller than the sum of its proper divisors (194077100).

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

164218516 is a wasteful number, since it uses less digits than its factorization.

164218516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533199 (or 533197 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 164218516 is about 12814.7772512830. Note that the first 3 decimals coincide. The cubic root of 164218516 is about 547.6133676821.

The spelling of 164218516 in words is "one hundred sixty-four million, two hundred eighteen thousand, five hundred sixteen".