18453808608 has 96 divisors (see below), whose sum is σ = 50131509120. Its totient is φ = 5939182080.

The previous prime is 18453808589. The next prime is 18453808631. The reversal of 18453808608 is 80680835481.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445483 + ... + 485141.

It is an arithmetic number, because the mean of its divisors is an integer number (522203220).

Almost surely, 2^18453808608 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 18453808608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25065754560).

18453808608 is an abundant number, since it is smaller than the sum of its proper divisors (31677700512).

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

18453808608 is a wasteful number, since it uses less digits than its factorization.

18453808608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39840 (or 39832 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 51.

The spelling of 18453808608 in words is "eighteen billion, four hundred fifty-three million, eight hundred eight thousand, six hundred eight".