18191364182 has 16 divisors (see below), whose sum is σ = 28936044720. Its totient is φ = 8547641088.

The previous prime is 18191364181. The next prime is 18191364221. The reversal of 18191364182 is 28146319181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18191364181) 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, 383543 + ... + 428354.

It is an arithmetic number, because the mean of its divisors is an integer number (1808502795).

Almost surely, 2^18191364182 is an apocalyptic number.

18191364182 is a deficient number, since it is larger than the sum of its proper divisors (10744680538).

18191364182 is a wasteful number, since it uses less digits than its factorization.

18191364182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812575.

The product of its digits is 82944, while the sum is 44.

Multiplying 18191364182 by its sum of digits (44), we get a palindrome (800420024008).

The spelling of 18191364182 in words is "eighteen billion, one hundred ninety-one million, three hundred sixty-four thousand, one hundred eighty-two".