18995334048 has 36 divisors (see below), whose sum is σ = 54017982018. Its totient is φ = 6331777920.

The previous prime is 18995334023. The next prime is 18995334049. The reversal of 18995334048 is 84043359981.

18995334048 is a `hidden beast` number, since 18 + 99 + 533 + 4 + 0 + 4 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10303874064 + 8691459984 = 101508^2 + 93228^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 18995333985 and 18995334003.

It is not an unprimeable number, because it can be changed into a prime (18995334049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32977723 + ... + 32978298.

Almost surely, 2^18995334048 is an apocalyptic number.

18995334048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18995334048 is an abundant number, since it is smaller than the sum of its proper divisors (35022647970).

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

18995334048 is a wasteful number, since it uses less digits than its factorization.

18995334048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65956037 (or 65956026 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 18995334048 in words is "eighteen billion, nine hundred ninety-five million, three hundred thirty-four thousand, forty-eight".