163819020728 has 128 divisors (see below), whose sum is σ = 357870182400. Its totient is φ = 69478348800.

The previous prime is 163819020683. The next prime is 163819020733. The reversal of 163819020728 is 827020918361.

It is a happy number.

163819020728 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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102578426 + ... + 102580022.

It is an arithmetic number, because the mean of its divisors is an integer number (2795860800).

Almost surely, 2^163819020728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163819020728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178935091200).

163819020728 is an abundant number, since it is smaller than the sum of its proper divisors (194051161672).

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

163819020728 is a wasteful number, since it uses less digits than its factorization.

163819020728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2181 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The spelling of 163819020728 in words is "one hundred sixty-three billion, eight hundred nineteen million, twenty thousand, seven hundred twenty-eight".