18748452 has 12 divisors (see below), whose sum is σ = 43746416. Its totient is φ = 6249480.

The previous prime is 18748447. The next prime is 18748453. The reversal of 18748452 is 25484781.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 18748452.

It is not an unprimeable number, because it can be changed into a prime (18748453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781174 + ... + 781197.

Almost surely, 2^18748452 is an apocalyptic number.

18748452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18748452 is an abundant number, since it is smaller than the sum of its proper divisors (24997964).

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

18748452 is a wasteful number, since it uses less digits than its factorization.

18748452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562378 (or 1562376 counting only the distinct ones).

The product of its digits is 71680, while the sum is 39.

The square root of 18748452 is about 4329.9482675893. The cubic root of 18748452 is about 265.6573310035.

The spelling of 18748452 in words is "eighteen million, seven hundred forty-eight thousand, four hundred fifty-two".