188101701920 has 144 divisors (see below), whose sum is σ = 488832200640. Its totient is φ = 68348797440.

The previous prime is 188101701899. The next prime is 188101701967. The reversal of 188101701920 is 29107101881.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33354461 + ... + 33360099.

It is an arithmetic number, because the mean of its divisors is an integer number (3394668060).

Almost surely, 2^188101701920 is an apocalyptic number.

188101701920 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 188101701920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244416100320).

188101701920 is an abundant number, since it is smaller than the sum of its proper divisors (300730498720).

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

188101701920 is a wasteful number, since it uses less digits than its factorization.

188101701920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7399 (or 7380 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 38.

The spelling of 188101701920 in words is "one hundred eighty-eight billion, one hundred one million, seven hundred one thousand, nine hundred twenty".