187938900432 has 80 divisors (see below), whose sum is σ = 539507136000. Its totient is φ = 62640158976.

The previous prime is 187938900377. The next prime is 187938900433. The reversal of 187938900432 is 234009839781.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187938900433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7283169 + ... + 7308927.

It is an arithmetic number, because the mean of its divisors is an integer number (6743839200).

Almost surely, 2^187938900432 is an apocalyptic number.

187938900432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

187938900432 is an abundant number, since it is smaller than the sum of its proper divisors (351568235568).

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

187938900432 is a wasteful number, since it uses less digits than its factorization.

187938900432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42665 (or 42653 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 187938900432 in words is "one hundred eighty-seven billion, nine hundred thirty-eight million, nine hundred thousand, four hundred thirty-two".