164869644 has 24 divisors (see below), whose sum is σ = 391955760. Its totient is φ = 53919424.

The previous prime is 164869643. The next prime is 164869667. The reversal of 164869644 is 446968461.

It is a happy number.

164869644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 164869593 and 164869602.

It is not an unprimeable number, because it can be changed into a prime (164869643) 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, 128979 + ... + 130250.

It is an arithmetic number, because the mean of its divisors is an integer number (16331490).

Almost surely, 2^164869644 is an apocalyptic number.

It is an amenable number.

164869644 is an abundant number, since it is smaller than the sum of its proper divisors (227086116).

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

164869644 is a wasteful number, since it uses less digits than its factorization.

164869644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259289 (or 259287 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 164869644 is about 12840.1574756698. The cubic root of 164869644 is about 548.3361773015.

The spelling of 164869644 in words is "one hundred sixty-four million, eight hundred sixty-nine thousand, six hundred forty-four".