163403968 has 56 divisors (see below), whose sum is σ = 399096992. Its totient is φ = 64641024.

The previous prime is 163403963. The next prime is 163404001. The reversal of 163403968 is 869304361.

It is a tau number, because it is divible by the number of its divisors (56).

It is a self number, because there is not a number n which added to its sum of digits gives 163403968.

It is not an unprimeable number, because it can be changed into a prime (163403963) 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, 8205 + ... + 19852.

It is an arithmetic number, because the mean of its divisors is an integer number (7126732).

Almost surely, 2^163403968 is an apocalyptic number.

It is an amenable number.

163403968 is an abundant number, since it is smaller than the sum of its proper divisors (235693024).

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

163403968 is a wasteful number, since it uses less digits than its factorization.

163403968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28089 (or 28079 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 163403968 is about 12782.9561526276. The cubic root of 163403968 is about 546.7064522567.

The spelling of 163403968 in words is "one hundred sixty-three million, four hundred three thousand, nine hundred sixty-eight".