385683018 has 24 divisors (see below), whose sum is σ = 897304032. Its totient is φ = 110195064.

The previous prime is 385683007. The next prime is 385683019. The reversal of 385683018 is 810386583.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (385683019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 655630 + ... + 656217.

It is an arithmetic number, because the mean of its divisors is an integer number (37387668).

Almost surely, 2^385683018 is an apocalyptic number.

385683018 is an abundant number, since it is smaller than the sum of its proper divisors (511621014).

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

385683018 is a wasteful number, since it uses less digits than its factorization.

385683018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311866 (or 1311859 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 385683018 is about 19638.8140680643. The cubic root of 385683018 is about 727.9085807295.

The spelling of 385683018 in words is "three hundred eighty-five million, six hundred eighty-three thousand, eighteen".