18121316294 has 8 divisors (see below), whose sum is σ = 28780914168. Its totient is φ = 8527678240.

The previous prime is 18121316293. The next prime is 18121316327. The reversal of 18121316294 is 49261312181.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18121316293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266489912 + ... + 266489979.

It is an arithmetic number, because the mean of its divisors is an integer number (3597614271).

Almost surely, 2^18121316294 is an apocalyptic number.

18121316294 is a deficient number, since it is larger than the sum of its proper divisors (10659597874).

18121316294 is a wasteful number, since it uses less digits than its factorization.

18121316294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532979910.

The product of its digits is 20736, while the sum is 38.

The spelling of 18121316294 in words is "eighteen billion, one hundred twenty-one million, three hundred sixteen thousand, two hundred ninety-four".