18948608 has 80 divisors (see below), whose sum is σ = 45961344. Its totient is φ = 7618560.

The previous prime is 18948569. The next prime is 18948623. The reversal of 18948608 is 80684981.

It is a happy number.

It is a Cunningham number, because it is equal to 4353²-1.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60773 + ... + 61083.

Almost surely, 2^18948608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18948608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22980672).

18948608 is an abundant number, since it is smaller than the sum of its proper divisors (27012736).

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

18948608 is an equidigital number, since it uses as much as digits as its factorization.

18948608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 18948608 is about 4352.9998851367. Note that the first 3 decimals coincide. The cubic root of 18948608 is about 266.5993607914.

The spelling of 18948608 in words is "eighteen million, nine hundred forty-eight thousand, six hundred eight".