163877820 has 48 divisors (see below), whose sum is σ = 470056608. Its totient is φ = 42634240.

The previous prime is 163877771. The next prime is 163877827. The reversal of 163877820 is 28778361.

163877820 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 (163877827) 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, 30849 + ... + 35768.

It is an arithmetic number, because the mean of its divisors is an integer number (9792846).

Almost surely, 2^163877820 is an apocalyptic number.

163877820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163877820 is an abundant number, since it is smaller than the sum of its proper divisors (306178788).

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

163877820 is a wasteful number, since it uses less digits than its factorization.

163877820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66670 (or 66668 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 163877820 is about 12801.4772585042. The cubic root of 163877820 is about 547.2344034019.

The spelling of 163877820 in words is "one hundred sixty-three million, eight hundred seventy-seven thousand, eight hundred twenty".