18475219488 has 48 divisors (see below), whose sum is σ = 52906313376. Its totient is φ = 5598551040.

The previous prime is 18475219447. The next prime is 18475219517. The reversal of 18475219488 is 88491257481.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8746681 + ... + 8748792.

It is an arithmetic number, because the mean of its divisors is an integer number (1102214862).

Almost surely, 2^18475219488 is an apocalyptic number.

It is an amenable number.

18475219488 is an abundant number, since it is smaller than the sum of its proper divisors (34431093888).

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

18475219488 is a wasteful number, since it uses less digits than its factorization.

18475219488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17495497 (or 17495489 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 57.

The spelling of 18475219488 in words is "eighteen billion, four hundred seventy-five million, two hundred nineteen thousand, four hundred eighty-eight".