188820275084 has 48 divisors (see below), whose sum is σ = 386789711616. Its totient is φ = 78966014400.

The previous prime is 188820275069. The next prime is 188820275131. The reversal of 188820275084 is 480572028881.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1203539 + ... + 1351349.

It is an arithmetic number, because the mean of its divisors is an integer number (8058118992).

Almost surely, 2^188820275084 is an apocalyptic number.

188820275084 is a gapful number since it is divisible by the number (14) 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 188820275084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193394855808).

188820275084 is an abundant number, since it is smaller than the sum of its proper divisors (197969436532).

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

188820275084 is a wasteful number, since it uses less digits than its factorization.

188820275084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148926 (or 148924 counting only the distinct ones).

The product of its (nonzero) digits is 2293760, while the sum is 53.

The spelling of 188820275084 in words is "one hundred eighty-eight billion, eight hundred twenty million, two hundred seventy-five thousand, eighty-four".