18434416118 has 8 divisors (see below), whose sum is σ = 27658648848. Its totient is φ = 9214866504.

The previous prime is 18434416103. The next prime is 18434416153. The reversal of 18434416118 is 81161443481.

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

It is a super-2 number, since 2×18434416118² (a number of 21 digits) contains 22 as substring.

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, 1160921 + ... + 1176692.

It is an arithmetic number, because the mean of its divisors is an integer number (3457331106).

Almost surely, 2^18434416118 is an apocalyptic number.

18434416118 is a deficient number, since it is larger than the sum of its proper divisors (9224232730).

18434416118 is a wasteful number, since it uses less digits than its factorization.

18434416118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2341558.

The product of its digits is 73728, while the sum is 41.

Adding to 18434416118 its reverse (81161443481), we get a palindrome (99595859599).

The spelling of 18434416118 in words is "eighteen billion, four hundred thirty-four million, four hundred sixteen thousand, one hundred eighteen".