384033221618 has 18 divisors (see below), whose sum is σ = 607990312719. Its totient is φ = 181902585852.

The previous prime is 384033221567. The next prime is 384033221633. The reversal of 384033221618 is 816122330483.

It can be written as a sum of positive squares in only one way, i.e., 192016610809 + 192016610809 = 438197^2 + 438197^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=438197.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 16639955 + ... + 16663017.

Almost surely, 2^384033221618 is an apocalyptic number.

384033221618 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

384033221618 is a deficient number, since it is larger than the sum of its proper divisors (223957091101).

384033221618 is an frugal number, since it uses more digits than its factorization.

384033221618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46166 (or 23084 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 384033221618 in words is "three hundred eighty-four billion, thirty-three million, two hundred twenty-one thousand, six hundred eighteen".