163199904 has 96 divisors (see below), whose sum is σ = 510935040. Its totient is φ = 44596992.

The previous prime is 163199899. The next prime is 163199909. The reversal of 163199904 is 409991361.

163199904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (163199899) and next prime (163199909).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (163199909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10177 + ... + 20735.

It is an arithmetic number, because the mean of its divisors is an integer number (5322240).

Almost surely, 2^163199904 is an apocalyptic number.

163199904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163199904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255467520).

163199904 is an abundant number, since it is smaller than the sum of its proper divisors (347735136).

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

163199904 is a wasteful number, since it uses less digits than its factorization.

163199904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10602 (or 10594 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 163199904 is about 12774.9717807908. The cubic root of 163199904 is about 546.4787760662.

The spelling of 163199904 in words is "one hundred sixty-three million, one hundred ninety-nine thousand, nine hundred four".