18919848 has 32 divisors (see below), whose sum is σ = 47952000. Its totient is φ = 6219648.

The previous prime is 18919843. The next prime is 18919883. The reversal of 18919848 is 84891981.

It is a junction number, because it is equal to n+sod(n) for n = 18919797 and 18919806.

It is not an unprimeable number, because it can be changed into a prime (18919841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3648 + ... + 7151.

It is an arithmetic number, because the mean of its divisors is an integer number (1498500).

Almost surely, 2^18919848 is an apocalyptic number.

It is an amenable number.

18919848 is an abundant number, since it is smaller than the sum of its proper divisors (29032152).

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

18919848 is a wasteful number, since it uses less digits than its factorization.

18919848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10881 (or 10877 counting only the distinct ones).

The product of its digits is 165888, while the sum is 48.

The square root of 18919848 is about 4349.6951617326. The cubic root of 18919848 is about 266.4644119154.

The spelling of 18919848 in words is "eighteen million, nine hundred nineteen thousand, eight hundred forty-eight".