385831812 has 24 divisors (see below), whose sum is σ = 922233312. Its totient is φ = 125473600.

The previous prime is 385831807. The next prime is 385831829. The reversal of 385831812 is 218138583.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391614 + ... + 392597.

It is an arithmetic number, because the mean of its divisors is an integer number (38426388).

Almost surely, 2^385831812 is an apocalyptic number.

It is an amenable number.

385831812 is an abundant number, since it is smaller than the sum of its proper divisors (536401500).

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

385831812 is a wasteful number, since it uses less digits than its factorization.

385831812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784259 (or 784257 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 385831812 is about 19642.6019661347. The cubic root of 385831812 is about 728.0021761598.

The spelling of 385831812 in words is "three hundred eighty-five million, eight hundred thirty-one thousand, eight hundred twelve".