187893047385 has 32 divisors (see below), whose sum is σ = 335273904000. Its totient is φ = 99837079488.

The previous prime is 187893047369. The next prime is 187893047393. The reversal of 187893047385 is 583740398781.

187893047385 is a `hidden beast` number, since 1 + 8 + 7 + 89 + 3 + 0 + 473 + 85 = 666.

It is not a de Polignac number, because 187893047385 - 2⁴ = 187893047369 is a prime.

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, 2550675 + ... + 2623304.

It is an arithmetic number, because the mean of its divisors is an integer number (10477309500).

Almost surely, 2^187893047385 is an apocalyptic number.

187893047385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

187893047385 is a deficient number, since it is larger than the sum of its proper divisors (147380856615).

187893047385 is a wasteful number, since it uses less digits than its factorization.

187893047385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5174262 (or 5174256 counting only the distinct ones).

The product of its (nonzero) digits is 40642560, while the sum is 63.

The spelling of 187893047385 in words is "one hundred eighty-seven billion, eight hundred ninety-three million, forty-seven thousand, three hundred eighty-five".