164505444 has 24 divisors (see below), whose sum is σ = 392773920. Its totient is φ = 53559744.

The previous prime is 164505433. The next prime is 164505457. The reversal of 164505444 is 444505461.

164505444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164505444² = 54124082211274272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158889 + ... + 159920.

It is an arithmetic number, because the mean of its divisors is an integer number (16365580).

Almost surely, 2^164505444 is an apocalyptic number.

It is an amenable number.

164505444 is an abundant number, since it is smaller than the sum of its proper divisors (228268476).

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

164505444 is a wasteful number, since it uses less digits than its factorization.

164505444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318859 (or 318857 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 164505444 is about 12825.9675658408. The cubic root of 164505444 is about 547.9321181479.

The spelling of 164505444 in words is "one hundred sixty-four million, five hundred five thousand, four hundred forty-four".