18000909292 has 12 divisors (see below), whose sum is σ = 31690224720. Its totient is φ = 8946559376.

The previous prime is 18000909239. The next prime is 18000909293. The reversal of 18000909292 is 29290900081.

It is not an unprimeable number, because it can be changed into a prime (18000909293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13473067 + ... + 13474402.

It is an arithmetic number, because the mean of its divisors is an integer number (2640852060).

Almost surely, 2^18000909292 is an apocalyptic number.

It is an amenable number.

18000909292 is a deficient number, since it is larger than the sum of its proper divisors (13689315428).

18000909292 is a wasteful number, since it uses less digits than its factorization.

18000909292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26947640 (or 26947638 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 18000909292 in words is "eighteen billion, nine hundred nine thousand, two hundred ninety-two".