164491931984 has 40 divisors (see below), whose sum is σ = 320879343360. Its totient is φ = 81684839808.

The previous prime is 164491931971. The next prime is 164491932019. The reversal of 164491931984 is 489139194461.

It is a congruent number.

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, 5972357 + ... + 5999835.

It is an arithmetic number, because the mean of its divisors is an integer number (8021983584).

Almost surely, 2^164491931984 is an apocalyptic number.

It is an amenable number.

164491931984 is a deficient number, since it is larger than the sum of its proper divisors (156387411376).

164491931984 is a wasteful number, since it uses less digits than its factorization.

164491931984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30027 (or 30021 counting only the distinct ones).

The product of its digits is 6718464, while the sum is 59.

The spelling of 164491931984 in words is "one hundred sixty-four billion, four hundred ninety-one million, nine hundred thirty-one thousand, nine hundred eighty-four".