163855244 has 24 divisors (see below), whose sum is σ = 328382880. Its totient is φ = 70079616.

The previous prime is 163855201. The next prime is 163855247. The reversal of 163855244 is 442558361.

It is a super-3 number, since 3×163855244³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163855198 and 163855207.

It is not an unprimeable number, because it can be changed into a prime (163855247) 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, 8504 + ... + 20000.

It is an arithmetic number, because the mean of its divisors is an integer number (13682620).

Almost surely, 2^163855244 is an apocalyptic number.

163855244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

163855244 is an abundant number, since it is smaller than the sum of its proper divisors (164527636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163855244 is a wasteful number, since it uses less digits than its factorization.

163855244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12017 (or 12015 counting only the distinct ones).

The product of its digits is 115200, while the sum is 38.

The square root of 163855244 is about 12800.5954548997. The cubic root of 163855244 is about 547.2092730309.

The spelling of 163855244 in words is "one hundred sixty-three million, eight hundred fifty-five thousand, two hundred forty-four".