164643018 has 16 divisors (see below), whose sum is σ = 346617120. Its totient is φ = 51992496.

The previous prime is 164643013. The next prime is 164643019. The reversal of 164643018 is 810346461.

164643018 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164643018² = 54214646752296648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 164643018.

It is not an unprimeable number, because it can be changed into a prime (164643013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 722005 + ... + 722232.

It is an arithmetic number, because the mean of its divisors is an integer number (21663570).

Almost surely, 2^164643018 is an apocalyptic number.

164643018 is an abundant number, since it is smaller than the sum of its proper divisors (181974102).

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

164643018 is a wasteful number, since it uses less digits than its factorization.

164643018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444261.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 164643018 is about 12831.3295491933. The cubic root of 164643018 is about 548.0848186861.

Adding to 164643018 its reverse (810346461), we get a palindrome (974989479).

The spelling of 164643018 in words is "one hundred sixty-four million, six hundred forty-three thousand, eighteen".