18443508000 has 96 divisors (see below), whose sum is σ = 60420971520. Its totient is φ = 4918265600.

The previous prime is 18443507989. The next prime is 18443508007. The reversal of 18443508000 is 80534481.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (18443508007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756480 + ... + 780479.

It is an arithmetic number, because the mean of its divisors is an integer number (629385120).

Almost surely, 2^18443508000 is an apocalyptic number.

18443508000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18443508000 is an abundant number, since it is smaller than the sum of its proper divisors (41977463520).

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

18443508000 is a wasteful number, since it uses less digits than its factorization.

18443508000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536987 (or 1536969 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The spelling of 18443508000 in words is "eighteen billion, four hundred forty-three million, five hundred eight thousand".