163993004 has 18 divisors (see below), whose sum is σ = 333843300. Its totient is φ = 70282632.

The previous prime is 163993003. The next prime is 163993021. The reversal of 163993004 is 400399361.

163993004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (163993001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 418154 + ... + 418545.

It is an arithmetic number, because the mean of its divisors is an integer number (18546850).

Almost surely, 2^163993004 is an apocalyptic number.

163993004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

163993004 is an abundant number, since it is smaller than the sum of its proper divisors (169850296).

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

163993004 is a wasteful number, since it uses less digits than its factorization.

163993004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836717 (or 836708 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 163993004 is about 12805.9753240431. The cubic root of 163993004 is about 547.3625840295.

The spelling of 163993004 in words is "one hundred sixty-three million, nine hundred ninety-three thousand, four".