18009232446 has 8 divisors (see below), whose sum is σ = 36018464904. Its totient is φ = 6003077480.

The previous prime is 18009232427. The next prime is 18009232457. The reversal of 18009232446 is 64423290081.

It is a sphenic number, since it is the product of 3 distinct primes.

18009232446 is an admirable number.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1500769365 + ... + 1500769376.

It is an arithmetic number, because the mean of its divisors is an integer number (4502308113).

Almost surely, 2^18009232446 is an apocalyptic number.

18009232446 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18009232446 is a wasteful number, since it uses less digits than its factorization.

18009232446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3001538746.

The product of its (nonzero) digits is 82944, while the sum is 39.

The spelling of 18009232446 in words is "eighteen billion, nine million, two hundred thirty-two thousand, four hundred forty-six".