163800816 has 40 divisors (see below), whose sum is σ = 437747280. Its totient is φ = 52717056.

The previous prime is 163800809. The next prime is 163800817. The reversal of 163800816 is 618008361.

163800816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163800817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57445 + ... + 60228.

It is an arithmetic number, because the mean of its divisors is an integer number (10943682).

Almost surely, 2^163800816 is an apocalyptic number.

163800816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163800816 is an abundant number, since it is smaller than the sum of its proper divisors (273946464).

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

163800816 is a wasteful number, since it uses less digits than its factorization.

163800816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117713 (or 117707 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 163800816 is about 12798.4692834729. The cubic root of 163800816 is about 547.1486772596.

The spelling of 163800816 in words is "one hundred sixty-three million, eight hundred thousand, eight hundred sixteen".