385131018 has 8 divisors (see below), whose sum is σ = 770262048. Its totient is φ = 128377004.

The previous prime is 385130981. The next prime is 385131023. The reversal of 385131018 is 810131583.

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

385131018 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 32094246 + ... + 32094257.

It is an arithmetic number, because the mean of its divisors is an integer number (96282756).

Almost surely, 2^385131018 is an apocalyptic number.

385131018 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.

385131018 is a wasteful number, since it uses less digits than its factorization.

385131018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64188508.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 385131018 is about 19624.7552341424. The cubic root of 385131018 is about 727.5611474211.

The spelling of 385131018 in words is "three hundred eighty-five million, one hundred thirty-one thousand, eighteen".