164443500 has 192 divisors, whose sum is σ = 573605760. Its totient is φ = 40435200.

The previous prime is 164443463. The next prime is 164443507. The reversal of 164443500 is 5344461.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (164443507) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 175032 + ... + 175968.

It is an arithmetic number, because the mean of its divisors is an integer number (2987530).

Almost surely, 2^164443500 is an apocalyptic number.

164443500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164443500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286802880).

164443500 is an abundant number, since it is smaller than the sum of its proper divisors (409162260).

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

164443500 is a wasteful number, since it uses less digits than its factorization.

164443500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 164443500 is about 12823.5525498982. The cubic root of 164443500 is about 547.8633354837.

Adding to 164443500 its reverse (5344461), we get a palindrome (169787961).

The spelling of 164443500 in words is "one hundred sixty-four million, four hundred forty-three thousand, five hundred".