385817830 has 32 divisors (see below), whose sum is σ = 718295040. Its totient is φ = 149117280.

The previous prime is 385817813. The next prime is 385817837. The reversal of 385817830 is 38718583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385817837) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 31935 + ... + 42325.

It is an arithmetic number, because the mean of its divisors is an integer number (22446720).

Almost surely, 2^385817830 is an apocalyptic number.

385817830 is a deficient number, since it is larger than the sum of its proper divisors (332477210).

385817830 is a wasteful number, since it uses less digits than its factorization.

385817830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10524.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 385817830 is about 19642.2460528321. The cubic root of 385817830 is about 727.9933821300.

The spelling of 385817830 in words is "three hundred eighty-five million, eight hundred seventeen thousand, eight hundred thirty".