164551944 has 64 divisors (see below), whose sum is σ = 423936000. Its totient is φ = 53202240.

The previous prime is 164551939. The next prime is 164551957. The reversal of 164551944 is 449155461.

164551944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111129 + ... + 112599.

It is an arithmetic number, because the mean of its divisors is an integer number (6624000).

Almost surely, 2^164551944 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 164551944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211968000).

164551944 is an abundant number, since it is smaller than the sum of its proper divisors (259384056).

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

164551944 is a wasteful number, since it uses less digits than its factorization.

164551944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618 (or 1614 counting only the distinct ones).

The product of its digits is 86400, while the sum is 39.

The square root of 164551944 is about 12827.7801664980. The cubic root of 164551944 is about 547.9837404379.

The spelling of 164551944 in words is "one hundred sixty-four million, five hundred fifty-one thousand, nine hundred forty-four".