18788196 has 96 divisors (see below), whose sum is σ = 54190080. Its totient is φ = 4944384.

The previous prime is 18788177. The next prime is 18788197. The reversal of 18788196 is 69188781.

It is not an unprimeable number, because it can be changed into a prime (18788197) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 84141 + ... + 84363.

It is an arithmetic number, because the mean of its divisors is an integer number (564480).

Almost surely, 2^18788196 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 18788196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27095040).

18788196 is an abundant number, since it is smaller than the sum of its proper divisors (35401884).

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

18788196 is a wasteful number, since it uses less digits than its factorization.

18788196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 311 counting only the distinct ones).

The product of its digits is 193536, while the sum is 48.

The square root of 18788196 is about 4334.5352692071. The cubic root of 18788196 is about 265.8449168561.

The spelling of 18788196 in words is "eighteen million, seven hundred eighty-eight thousand, one hundred ninety-six".