18236473361 has 8 divisors (see below), whose sum is σ = 18867859200. Its totient is φ = 17605257040.

The previous prime is 18236473357. The next prime is 18236473363. The reversal of 18236473361 is 16337463281.

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

It is a cyclic number.

It is not a de Polignac number, because 18236473361 - 2² = 18236473357 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18236473363) 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, 200096 + ... + 276606.

It is an arithmetic number, because the mean of its divisors is an integer number (2358482400).

Almost surely, 2^18236473361 is an apocalyptic number.

It is an amenable number.

18236473361 is a deficient number, since it is larger than the sum of its proper divisors (631385839).

18236473361 is an equidigital number, since it uses as much as digits as its factorization.

18236473361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84759.

The product of its digits is 435456, while the sum is 44.

The spelling of 18236473361 in words is "eighteen billion, two hundred thirty-six million, four hundred seventy-three thousand, three hundred sixty-one".