385518636 has 48 divisors (see below), whose sum is σ = 1001599200. Its totient is φ = 128235456.

The previous prime is 385518619. The next prime is 385518647. The reversal of 385518636 is 636815583.

385518636 is a `hidden beast` number, since 3 + 8 + 5 + 5 + 1 + 8 + 636 = 666.

385518636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 385518591 and 385518600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51466 + ... + 58478.

It is an arithmetic number, because the mean of its divisors is an integer number (20866650).

Almost surely, 2^385518636 is an apocalyptic number.

385518636 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

385518636 is an abundant number, since it is smaller than the sum of its proper divisors (616080564).

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

385518636 is a wasteful number, since it uses less digits than its factorization.

385518636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7535 (or 7527 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 385518636 is about 19634.6284915198. The cubic root of 385518636 is about 727.8051520362.

The spelling of 385518636 in words is "three hundred eighty-five million, five hundred eighteen thousand, six hundred thirty-six".