18718794 has 24 divisors (see below), whose sum is σ = 40940640. Its totient is φ = 6180648.

The previous prime is 18718793. The next prime is 18718801. The reversal of 18718794 is 49781781.

It is not an unprimeable number, because it can be changed into a prime (18718793) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2934 + ... + 6785.

It is an arithmetic number, because the mean of its divisors is an integer number (1705860).

Almost surely, 2^18718794 is an apocalyptic number.

18718794 is an abundant number, since it is smaller than the sum of its proper divisors (22221846).

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

18718794 is a wasteful number, since it uses less digits than its factorization.

18718794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9834 (or 9831 counting only the distinct ones).

The product of its digits is 112896, while the sum is 45.

The square root of 18718794 is about 4326.5221598878. The cubic root of 18718794 is about 265.5171767963.

It can be divided in two parts, 187 and 18794, that added together give a palindrome (18981).

The spelling of 18718794 in words is "eighteen million, seven hundred eighteen thousand, seven hundred ninety-four".