188154983856 has 160 divisors (see below), whose sum is σ = 579993735168. Its totient is φ = 51391422720.

The previous prime is 188154983843. The next prime is 188154983867. The reversal of 188154983856 is 658389451881.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15534955 + ... + 15547061.

Almost surely, 2^188154983856 is an apocalyptic number.

188154983856 is a gapful number since it is divisible by the number (16) 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 188154983856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289996867584).

188154983856 is an abundant number, since it is smaller than the sum of its proper divisors (391838751312).

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

188154983856 is a wasteful number, since it uses less digits than its factorization.

188154983856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14159 (or 14153 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 66.

The spelling of 188154983856 in words is "one hundred eighty-eight billion, one hundred fifty-four million, nine hundred eighty-three thousand, eight hundred fifty-six".