385638186 has 8 divisors (see below), whose sum is σ = 771276384. Its totient is φ = 128546060.

The previous prime is 385638181. The next prime is 385638203. The reversal of 385638186 is 681836583.

It is a sphenic number, since it is the product of 3 distinct primes.

385638186 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (385638181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32136510 + ... + 32136521.

It is an arithmetic number, because the mean of its divisors is an integer number (96409548).

Almost surely, 2^385638186 is an apocalyptic number.

385638186 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

385638186 is a wasteful number, since it uses less digits than its factorization.

385638186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64273036.

The product of its digits is 829440, while the sum is 48.

The square root of 385638186 is about 19637.6726217747. The cubic root of 385638186 is about 727.8803754759.

The spelling of 385638186 in words is "three hundred eighty-five million, six hundred thirty-eight thousand, one hundred eighty-six".