187982888940 has 1536 divisors, whose sum is σ = 808980480000. Its totient is φ = 35070382080.

The previous prime is 187982888939. The next prime is 187982888963. The reversal of 187982888940 is 49888289781.

187982888940 is a `hidden beast` number, since 187 + 98 + 288 + 89 + 4 + 0 = 666.

It is an unprimeable number.

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 511 ways as a sum of consecutive naturals, for example, 1724613606 + ... + 1724613714.

It is an arithmetic number, because the mean of its divisors is an integer number (526680000).

Almost surely, 2^187982888940 is an apocalyptic number.

187982888940 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 187982888940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404490240000).

187982888940 is an abundant number, since it is smaller than the sum of its proper divisors (620997591060).

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

187982888940 is a wasteful number, since it uses less digits than its factorization.

187982888940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 72.

The spelling of 187982888940 in words is "one hundred eighty-seven billion, nine hundred eighty-two million, eight hundred eighty-eight thousand, nine hundred forty".