164213644 has 12 divisors (see below), whose sum is σ = 328427344. Its totient is φ = 70377264.

The previous prime is 164213641. The next prime is 164213653. The reversal of 164213644 is 446312461.

164213644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

164213644 is an admirable number.

It is a super-2 number, since 2×164213644² = 53932241751517472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164213641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2932359 + ... + 2932414.

Almost surely, 2^164213644 is an apocalyptic number.

164213644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

164213644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

164213644 is a wasteful number, since it uses less digits than its factorization.

164213644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864784 (or 5864782 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 164213644 is about 12814.5871568303. The cubic root of 164213644 is about 547.6079521362.

The spelling of 164213644 in words is "one hundred sixty-four million, two hundred thirteen thousand, six hundred forty-four".