18869321448 has 48 divisors (see below), whose sum is σ = 51148581120. Its totient is φ = 6284337696.

The previous prime is 18869321437. The next prime is 18869321467. The reversal of 18869321448 is 84412396881.

It is a happy number.

18869321448 is a `hidden beast` number, since 18 + 86 + 93 + 21 + 448 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 18869321394 and 18869321403.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 28936 + ... + 196407.

It is an arithmetic number, because the mean of its divisors is an integer number (1065595440).

Almost surely, 2^18869321448 is an apocalyptic number.

18869321448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18869321448 is an abundant number, since it is smaller than the sum of its proper divisors (32279259672).

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

18869321448 is a wasteful number, since it uses less digits than its factorization.

18869321448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226518 (or 226511 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 18869321448 in words is "eighteen billion, eight hundred sixty-nine million, three hundred twenty-one thousand, four hundred forty-eight".