164813649 has 64 divisors (see below), whose sum is σ = 299593728. Its totient is φ = 77817600.

The previous prime is 164813617. The next prime is 164813659. The reversal of 164813649 is 946318461.

It is not a de Polignac number, because 164813649 - 2⁵ = 164813617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164813649.

It is not an unprimeable number, because it can be changed into a prime (164813659) 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, 212827 + ... + 213599.

It is an arithmetic number, because the mean of its divisors is an integer number (4681152).

Almost surely, 2^164813649 is an apocalyptic number.

It is an amenable number.

164813649 is a deficient number, since it is larger than the sum of its proper divisors (134780079).

164813649 is a wasteful number, since it uses less digits than its factorization.

164813649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878.

The product of its digits is 124416, while the sum is 42.

The square root of 164813649 is about 12837.9768265876. The cubic root of 164813649 is about 548.2740927758.

The spelling of 164813649 in words is "one hundred sixty-four million, eight hundred thirteen thousand, six hundred forty-nine".