163644349 has 8 divisors (see below), whose sum is σ = 178854048. Its totient is φ = 148490160.

The previous prime is 163644343. The next prime is 163644353. The reversal of 163644349 is 943446361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 163644349 - 2¹¹ = 163642301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163644343) 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 7 ways as a sum of consecutive naturals, for example, 7582 + ... + 19615.

It is an arithmetic number, because the mean of its divisors is an integer number (22356756).

Almost surely, 2^163644349 is an apocalyptic number.

It is an amenable number.

163644349 is a deficient number, since it is larger than the sum of its proper divisors (15209699).

163644349 is a wasteful number, since it uses less digits than its factorization.

163644349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27755.

The product of its digits is 186624, while the sum is 40.

The square root of 163644349 is about 12792.3550998243. The cubic root of 163644349 is about 546.9744046524.

The spelling of 163644349 in words is "one hundred sixty-three million, six hundred forty-four thousand, three hundred forty-nine".