385631830836 has 144 divisors (see below), whose sum is σ = 1138904166400. Its totient is φ = 109974957120.

The previous prime is 385631830823. The next prime is 385631830841. The reversal of 385631830836 is 638038136583.

It is a happy number.

385631830836 is a `hidden beast` number, since 3 + 8 + 563 + 18 + 30 + 8 + 36 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6651405 + ... + 6709131.

Almost surely, 2^385631830836 is an apocalyptic number.

385631830836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 385631830836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569452083200).

385631830836 is an abundant number, since it is smaller than the sum of its proper divisors (753272335564).

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

385631830836 is a wasteful number, since it uses less digits than its factorization.

385631830836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58299 (or 58280 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 385631830836 in words is "three hundred eighty-five billion, six hundred thirty-one million, eight hundred thirty thousand, eight hundred thirty-six".