188478323900 has 36 divisors (see below), whose sum is σ = 409018487808. Its totient is φ = 75387546240.

The previous prime is 188478323899. The next prime is 188478323909. The reversal of 188478323900 is 9323874881.

It is a super-2 number, since 2×188478323900² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188478323909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2820677 + ... + 2886723.

Almost surely, 2^188478323900 is an apocalyptic number.

188478323900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188478323900 is an abundant number, since it is smaller than the sum of its proper divisors (220540163908).

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

188478323900 is a wasteful number, since it uses less digits than its factorization.

188478323900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94598 (or 94591 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 188478323900 in words is "one hundred eighty-eight billion, four hundred seventy-eight million, three hundred twenty-three thousand, nine hundred".