18234718 has 8 divisors (see below), whose sum is σ = 28791720. Its totient is φ = 8637480.

The previous prime is 18234691. The next prime is 18234721. The reversal of 18234718 is 81743281.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239893 + ... + 239968.

It is an arithmetic number, because the mean of its divisors is an integer number (3598965).

Almost surely, 2^18234718 is an apocalyptic number.

18234718 is a deficient number, since it is larger than the sum of its proper divisors (10557002).

18234718 is a wasteful number, since it uses less digits than its factorization.

18234718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479882.

The product of its digits is 10752, while the sum is 34.

The square root of 18234718 is about 4270.2128752558. The cubic root of 18234718 is about 263.2083627853.

Adding to 18234718 its reverse (81743281), we get a palindrome (99977999).

The spelling of 18234718 in words is "eighteen million, two hundred thirty-four thousand, seven hundred eighteen".