18783436008 has 32 divisors (see below), whose sum is σ = 47125719360. Its totient is φ = 6238861440.

The previous prime is 18783436003. The next prime is 18783436031. The reversal of 18783436008 is 80063438781.

It is not an unprimeable number, because it can be changed into a prime (18783436003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385860 + ... + 1399347.

It is an arithmetic number, because the mean of its divisors is an integer number (1472678730).

Almost surely, 2^18783436008 is an apocalyptic number.

It is an amenable number.

18783436008 is an abundant number, since it is smaller than the sum of its proper divisors (28342283352).

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

18783436008 is a wasteful number, since it uses less digits than its factorization.

18783436008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785497 (or 2785493 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 18783436008 in words is "eighteen billion, seven hundred eighty-three million, four hundred thirty-six thousand, eight".