18343016448 has 192 divisors, whose sum is σ = 50843520000. Its totient is φ = 5874647040.

The previous prime is 18343016389. The next prime is 18343016449. The reversal of 18343016448 is 84461034381.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18343016449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36759303 + ... + 36759801.

It is an arithmetic number, because the mean of its divisors is an integer number (264810000).

Almost surely, 2^18343016448 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 18343016448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25421760000).

18343016448 is an abundant number, since it is smaller than the sum of its proper divisors (32500503552).

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

18343016448 is a wasteful number, since it uses less digits than its factorization.

18343016448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 728 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 42.

The spelling of 18343016448 in words is "eighteen billion, three hundred forty-three million, sixteen thousand, four hundred forty-eight".