187713431928 has 384 divisors, whose sum is σ = 628666272000. Its totient is φ = 49855426560.

The previous prime is 187713431849. The next prime is 187713431933. The reversal of 187713431928 is 829134317781.

187713431928 is a `hidden beast` number, since 187 + 7 + 1 + 3 + 431 + 9 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15086926 + ... + 15099362.

It is an arithmetic number, because the mean of its divisors is an integer number (1637151750).

Almost surely, 2^187713431928 is an apocalyptic number.

187713431928 is a gapful number since it is divisible by the number (18) 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 187713431928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314333136000).

187713431928 is an abundant number, since it is smaller than the sum of its proper divisors (440952840072).

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

187713431928 is a wasteful number, since it uses less digits than its factorization.

187713431928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12555 (or 12548 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The spelling of 187713431928 in words is "one hundred eighty-seven billion, seven hundred thirteen million, four hundred thirty-one thousand, nine hundred twenty-eight".