163839968 has 24 divisors (see below), whose sum is σ = 323053920. Its totient is φ = 81794560.

The previous prime is 163839967. The next prime is 163840007. The reversal of 163839968 is 869938361.

It is a super-2 number, since 2×163839968² = 53687070228482048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163839967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19448 + ... + 26568.

It is an arithmetic number, because the mean of its divisors is an integer number (13460580).

Almost surely, 2^163839968 is an apocalyptic number.

It is an amenable number.

163839968 is a deficient number, since it is larger than the sum of its proper divisors (159213952).

163839968 is an equidigital number, since it uses as much as digits as its factorization.

163839968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850 (or 7842 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 53.

The square root of 163839968 is about 12799.9987499999. The cubic root of 163839968 is about 547.1922673120.

The spelling of 163839968 in words is "one hundred sixty-three million, eight hundred thirty-nine thousand, nine hundred sixty-eight".