164231808 has 128 divisors (see below), whose sum is σ = 475009920. Its totient is φ = 49975296.

The previous prime is 164231803. The next prime is 164231813. The reversal of 164231808 is 808132461.

It is an interprime number because it is at equal distance from previous prime (164231803) and next prime (164231813).

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (164231803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 833566 + ... + 833762.

It is an arithmetic number, because the mean of its divisors is an integer number (3711015).

Almost surely, 2^164231808 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 164231808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237504960).

164231808 is an abundant number, since it is smaller than the sum of its proper divisors (310778112).

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

164231808 is a wasteful number, since it uses less digits than its factorization.

164231808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 382 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 164231808 is about 12815.2958608063. The cubic root of 164231808 is about 547.6281420625.

The spelling of 164231808 in words is "one hundred sixty-four million, two hundred thirty-one thousand, eight hundred eight".