385518 has 32 divisors (see below), whose sum is σ = 900864. Its totient is φ = 107712.

The previous prime is 385501. The next prime is 385519. The reversal of 385518 is 815583.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 385518.

It is not an unprimeable number, because it can be changed into a prime (385519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2746 + ... + 2882.

It is an arithmetic number, because the mean of its divisors is an integer number (28152).

2³⁸⁵⁵¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450432).

385518 is an abundant number, since it is smaller than the sum of its proper divisors (515346).

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

385518 is a wasteful number, since it uses less digits than its factorization.

385518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216.

The product of its digits is 4800, while the sum is 30.

The square root of 385518 is about 620.9009582856. The cubic root of 385518 is about 72.7804751810.

It can be divided in two parts, 385 and 518, that added together give a triangular number (903 = T₄₂).

The spelling of 385518 in words is "three hundred eighty-five thousand, five hundred eighteen".