18084373903 has 4 divisors (see below), whose sum is σ = 18084750160. Its totient is φ = 18083997648.

The previous prime is 18084373889. The next prime is 18084373919. The reversal of 18084373903 is 30937348081.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30937348081 = 35729 ⋅865889.

It is a cyclic number.

It is not a de Polignac number, because 18084373903 - 2¹³ = 18084365711 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 (18084373973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103275 + ... + 216412.

It is an arithmetic number, because the mean of its divisors is an integer number (4521187540).

Almost surely, 2^18084373903 is an apocalyptic number.

18084373903 is a deficient number, since it is larger than the sum of its proper divisors (376257).

18084373903 is an equidigital number, since it uses as much as digits as its factorization.

18084373903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376256.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 18084373903 in words is "eighteen billion, eighty-four million, three hundred seventy-three thousand, nine hundred three".