18211467316 has 24 divisors (see below), whose sum is σ = 37197893376. Its totient is φ = 7638852000.

The previous prime is 18211467247. The next prime is 18211467317. The reversal of 18211467316 is 61376411281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18211467317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6917935 + ... + 6920566.

It is an arithmetic number, because the mean of its divisors is an integer number (1549912224).

Almost surely, 2^18211467316 is an apocalyptic number.

It is an amenable number.

18211467316 is an abundant number, since it is smaller than the sum of its proper divisors (18986426060).

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

18211467316 is a wasteful number, since it uses less digits than its factorization.

18211467316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13838559 (or 13838557 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

Adding to 18211467316 its reverse (61376411281), we get a palindrome (79587878597).

The spelling of 18211467316 in words is "eighteen billion, two hundred eleven million, four hundred sixty-seven thousand, three hundred sixteen".