163856044 has 12 divisors (see below), whose sum is σ = 312816168. Its totient is φ = 74480000.

The previous prime is 163856041. The next prime is 163856051. The reversal of 163856044 is 440658361.

It is a happy number.

163856044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 163855994 and 163856012.

It is not an unprimeable number, because it can be changed into a prime (163856041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1861957 + ... + 1862044.

It is an arithmetic number, because the mean of its divisors is an integer number (26068014).

Almost surely, 2^163856044 is an apocalyptic number.

It is an amenable number.

163856044 is a deficient number, since it is larger than the sum of its proper divisors (148960124).

163856044 is a wasteful number, since it uses less digits than its factorization.

163856044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724016 (or 3724014 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 163856044 is about 12800.6267034079. The cubic root of 163856044 is about 547.2101635867.

The spelling of 163856044 in words is "one hundred sixty-three million, eight hundred fifty-six thousand, forty-four".