18818748 has 72 divisors (see below), whose sum is σ = 51979200. Its totient is φ = 5705856.

The previous prime is 18818719. The next prime is 18818749. The reversal of 18818748 is 84781881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18818749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36718 + ... + 37226.

Almost surely, 2^18818748 is an apocalyptic number.

18818748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18818748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25989600).

18818748 is an abundant number, since it is smaller than the sum of its proper divisors (33160452).

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

18818748 is a wasteful number, since it uses less digits than its factorization.

18818748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 606 counting only the distinct ones).

The product of its digits is 114688, while the sum is 45.

The square root of 18818748 is about 4338.0580908974. The cubic root of 18818748 is about 265.9889380517.

The spelling of 18818748 in words is "eighteen million, eight hundred eighteen thousand, seven hundred forty-eight".