18841373 has 4 divisors (see below), whose sum is σ = 19099548. Its totient is φ = 18583200.

The previous prime is 18841367. The next prime is 18841391. The reversal of 18841373 is 37314881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37314881 = 17 ⋅2194993.

It can be written as a sum of positive squares in 2 ways, for example, as 8773444 + 10067929 = 2962^2 + 3173^2 .

It is a cyclic number.

It is not a de Polignac number, because 18841373 - 2⁴ = 18841357 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 (18841343) 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, 128978 + ... + 129123.

It is an arithmetic number, because the mean of its divisors is an integer number (4774887).

Almost surely, 2^18841373 is an apocalyptic number.

It is an amenable number.

18841373 is a deficient number, since it is larger than the sum of its proper divisors (258175).

18841373 is an equidigital number, since it uses as much as digits as its factorization.

18841373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258174.

The product of its digits is 16128, while the sum is 35.

The square root of 18841373 is about 4340.6650412120. The cubic root of 18841373 is about 266.0954911834.

The spelling of 18841373 in words is "eighteen million, eight hundred forty-one thousand, three hundred seventy-three".