385185128 has 16 divisors (see below), whose sum is σ = 724273380. Its totient is φ = 192045568.

The previous prime is 385185121. The next prime is 385185139. The reversal of 385185128 is 821581583.

It can be written as a sum of positive squares in 2 ways, for example, as 357285604 + 27899524 = 18902^2 + 5282^2 .

It is not an unprimeable number, because it can be changed into a prime (385185121) 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 3 ways as a sum of consecutive naturals, for example, 65375 + ... + 71022.

Almost surely, 2^385185128 is an apocalyptic number.

It is an amenable number.

385185128 is a deficient number, since it is larger than the sum of its proper divisors (339088252).

385185128 is a wasteful number, since it uses less digits than its factorization.

385185128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136756 (or 136752 counting only the distinct ones).

The product of its digits is 76800, while the sum is 41.

The square root of 385185128 is about 19626.1338016432. The cubic root of 385185128 is about 727.5952193674.

The spelling of 385185128 in words is "three hundred eighty-five million, one hundred eighty-five thousand, one hundred twenty-eight".