385188687 has 18 divisors (see below), whose sum is σ = 602476992. Its totient is φ = 237038256.

The previous prime is 385188679. The next prime is 385188719. The reversal of 385188687 is 786881583.

It is a happy number.

385188687 is a `hidden beast` number, since 385 + 188 + 6 + 87 = 666.

It is not a de Polignac number, because 385188687 - 2³ = 385188679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385188607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 125103 + ... + 128144.

It is an arithmetic number, because the mean of its divisors is an integer number (33470944).

Almost surely, 2^385188687 is an apocalyptic number.

385188687 is a deficient number, since it is larger than the sum of its proper divisors (217288305).

385188687 is a wasteful number, since it uses less digits than its factorization.

385188687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253279 (or 253263 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 385188687 is about 19626.2244713546. The cubic root of 385188687 is about 727.5974602842.

The spelling of 385188687 in words is "three hundred eighty-five million, one hundred eighty-eight thousand, six hundred eighty-seven".