18430054008 has 128 divisors (see below), whose sum is σ = 51223104000. Its totient is φ = 5496201216.

The previous prime is 18430053959. The next prime is 18430054009. The reversal of 18430054008 is 80045003481.

It is a self number, because there is not a number n which added to its sum of digits gives 18430054008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18430054009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1523568 + ... + 1535616.

It is an arithmetic number, because the mean of its divisors is an integer number (400180500).

Almost surely, 2^18430054008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18430054008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25611552000).

18430054008 is an abundant number, since it is smaller than the sum of its proper divisors (32793049992).

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

18430054008 is a wasteful number, since it uses less digits than its factorization.

18430054008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12261 (or 12257 counting only the distinct ones).

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

Adding to 18430054008 its reverse (80045003481), we get a palindrome (98475057489).

The spelling of 18430054008 in words is "eighteen billion, four hundred thirty million, fifty-four thousand, eight".