163644245 has 16 divisors (see below), whose sum is σ = 213840000. Its totient is φ = 119746368.

The previous prime is 163644209. The next prime is 163644253. The reversal of 163644245 is 542446361.

It is a cyclic number.

It is not a de Polignac number, because 163644245 - 2⁶ = 163644181 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26945 + ... + 32454.

It is an arithmetic number, because the mean of its divisors is an integer number (13365000).

Almost surely, 2^163644245 is an apocalyptic number.

It is an amenable number.

163644245 is a deficient number, since it is larger than the sum of its proper divisors (50195755).

163644245 is a wasteful number, since it uses less digits than its factorization.

163644245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59452.

The product of its digits is 69120, while the sum is 35.

The square root of 163644245 is about 12792.3510348958. The cubic root of 163644245 is about 546.9742887805.

The spelling of 163644245 in words is "one hundred sixty-three million, six hundred forty-four thousand, two hundred forty-five".