163805000 has 60 divisors (see below), whose sum is σ = 385927245. Its totient is φ = 65160000.

The previous prime is 163804987. The next prime is 163805027. The reversal of 163805000 is 508361.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

163805000 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 110544196 + 53260804 = 10514^2 + 7298^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=9050.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 904910 + ... + 905090.

Almost surely, 2^163805000 is an apocalyptic number.

163805000 is a gapful number since it is divisible by the number (10) 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 163805000

163805000 is an abundant number, since it is smaller than the sum of its proper divisors (222122245).

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

163805000 is an frugal number, since it uses more digits than its factorization.

163805000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 163805000 is about 12798.6327394765. The cubic root of 163805000 is about 547.1533358660.

The spelling of 163805000 in words is "one hundred sixty-three million, eight hundred five thousand".