164645316 has 72 divisors (see below), whose sum is σ = 473788224. Its totient is φ = 47720640.

The previous prime is 164645303. The next prime is 164645321. The reversal of 164645316 is 613546461.

It is a happy number.

164645316 is a `hidden beast` number, since 1 + 6 + 4 + 645 + 3 + 1 + 6 = 666.

164645316 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70 + ... + 18146.

It is an arithmetic number, because the mean of its divisors is an integer number (6580392).

Almost surely, 2^164645316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164645316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236894112).

164645316 is an abundant number, since it is smaller than the sum of its proper divisors (309142908).

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

164645316 is a wasteful number, since it uses less digits than its factorization.

164645316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18121 (or 18116 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 164645316 is about 12831.4190953300. The cubic root of 164645316 is about 548.0873686334.

The spelling of 164645316 in words is "one hundred sixty-four million, six hundred forty-five thousand, three hundred sixteen".