18372728273 has 8 divisors (see below), whose sum is σ = 18411499392. Its totient is φ = 18333999936.

The previous prime is 18372728147. The next prime is 18372728323. The reversal of 18372728273 is 37282727381.

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 18372728273 - 2²⁴ = 18355951057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18372727273) 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, 935036 + ... + 954482.

It is an arithmetic number, because the mean of its divisors is an integer number (2301437424).

Almost surely, 2^18372728273 is an apocalyptic number.

It is an amenable number.

18372728273 is a deficient number, since it is larger than the sum of its proper divisors (38771119).

18372728273 is an equidigital number, since it uses as much as digits as its factorization.

18372728273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21391.

The product of its digits is 1580544, while the sum is 50.

The spelling of 18372728273 in words is "eighteen billion, three hundred seventy-two million, seven hundred twenty-eight thousand, two hundred seventy-three".