187057385 has 16 divisors (see below), whose sum is σ = 233472000. Its totient is φ = 143747136.

The previous prime is 187057363. The next prime is 187057393. The reversal of 187057385 is 583750781.

It is not a de Polignac number, because 187057385 - 2¹² = 187053289 is a prime.

It is an unprimeable number.

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, 8216 + ... + 21014.

It is an arithmetic number, because the mean of its divisors is an integer number (14592000).

Almost surely, 2^187057385 is an apocalyptic number.

It is an amenable number.

187057385 is a deficient number, since it is larger than the sum of its proper divisors (46414615).

187057385 is a wasteful number, since it uses less digits than its factorization.

187057385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12920.

The product of its (nonzero) digits is 235200, while the sum is 44.

The square root of 187057385 is about 13676.8923736352. The cubic root of 187057385 is about 571.9063951431.

The spelling of 187057385 in words is "one hundred eighty-seven million, fifty-seven thousand, three hundred eighty-five".