18385005352 has 32 divisors (see below), whose sum is σ = 40312641600. Its totient is φ = 7696047744.

The previous prime is 18385005341. The next prime is 18385005361. The reversal of 18385005352 is 25350058381.

It is a happy number.

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, 3815077 + ... + 3819892.

It is an arithmetic number, because the mean of its divisors is an integer number (1259770050).

Almost surely, 2^18385005352 is an apocalyptic number.

It is an amenable number.

18385005352 is an abundant number, since it is smaller than the sum of its proper divisors (21927636248).

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

18385005352 is a wasteful number, since it uses less digits than its factorization.

18385005352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7635025 (or 7635021 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 18385005352 in words is "eighteen billion, three hundred eighty-five million, five thousand, three hundred fifty-two".