18821848 has 16 divisors (see below), whose sum is σ = 35526960. Its totient is φ = 9348000.

The previous prime is 18821821. The next prime is 18821849. The reversal of 18821848 is 84812881.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18821848.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18821849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6583 + ... + 8998.

It is an arithmetic number, because the mean of its divisors is an integer number (2220435).

Almost surely, 2^18821848 is an apocalyptic number.

It is an amenable number.

18821848 is a deficient number, since it is larger than the sum of its proper divisors (16705112).

18821848 is a wasteful number, since it uses less digits than its factorization.

18821848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15738 (or 15734 counting only the distinct ones).

The product of its digits is 32768, while the sum is 40.

The square root of 18821848 is about 4338.4153789143. The cubic root of 18821848 is about 266.0035426441.

The spelling of 18821848 in words is "eighteen million, eight hundred twenty-one thousand, eight hundred forty-eight".