18190909182 has 48 divisors (see below), whose sum is σ = 37985213952. Its totient is φ = 5801632320.

The previous prime is 18190909159. The next prime is 18190909193. The reversal of 18190909182 is 28190909181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1467133 + ... + 1479479.

It is an arithmetic number, because the mean of its divisors is an integer number (791358624).

Almost surely, 2^18190909182 is an apocalyptic number.

18190909182 is an abundant number, since it is smaller than the sum of its proper divisors (19794304770).

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

18190909182 is a wasteful number, since it uses less digits than its factorization.

18190909182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12561 (or 12472 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 48.

Subtracting 18190909182 from its reverse (28190909181), we obtain a palindrome (9999999999).

The spelling of 18190909182 in words is "eighteen billion, one hundred ninety million, nine hundred nine thousand, one hundred eighty-two".