164619872 has 12 divisors (see below), whose sum is σ = 324095436. Its totient is φ = 82309920.

The previous prime is 164619811. The next prime is 164619877. The reversal of 164619872 is 278916461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164619877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2572154 + ... + 2572217.

It is an arithmetic number, because the mean of its divisors is an integer number (27007953).

Almost surely, 2^164619872 is an apocalyptic number.

It is an amenable number.

164619872 is a deficient number, since it is larger than the sum of its proper divisors (159475564).

164619872 is an equidigital number, since it uses as much as digits as its factorization.

164619872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5144381 (or 5144373 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 164619872 is about 12830.4275844572. The cubic root of 164619872 is about 548.0591336902.

The spelling of 164619872 in words is "one hundred sixty-four million, six hundred nineteen thousand, eight hundred seventy-two".