18744573303173 has 8 divisors (see below), whose sum is σ = 18984519321600. Its totient is φ = 18504694108368.

The previous prime is 18744573303167. The next prime is 18744573303223. The reversal of 18744573303173 is 37130337544781.

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 18744573303173 - 2³⁴ = 18727393433989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18744573303473) 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, 16141178 + ... + 17263451.

It is an arithmetic number, because the mean of its divisors is an integer number (2373064915200).

Almost surely, 2^{18744573303173} is an apocalyptic number.

It is an amenable number.

18744573303173 is a deficient number, since it is larger than the sum of its proper divisors (239946018427).

18744573303173 is an equidigital number, since it uses as much as digits as its factorization.

18744573303173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33411811.

The product of its (nonzero) digits is 17781120, while the sum is 56.

The spelling of 18744573303173 in words is "eighteen trillion, seven hundred forty-four billion, five hundred seventy-three million, three hundred three thousand, one hundred seventy-three".