18637041814 has 4 divisors (see below), whose sum is σ = 27955562724. Its totient is φ = 9318520906.

The previous prime is 18637041799. The next prime is 18637041823. The reversal of 18637041814 is 41814073681.

18637041814 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41814073681 = 17 ⋅2459651393.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4659260452 + ... + 4659260455.

It is an arithmetic number, because the mean of its divisors is an integer number (6988890681).

Almost surely, 2^18637041814 is an apocalyptic number.

18637041814 is a deficient number, since it is larger than the sum of its proper divisors (9318520910).

18637041814 is an equidigital number, since it uses as much as digits as its factorization.

18637041814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9318520909.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 18637041814 in words is "eighteen billion, six hundred thirty-seven million, forty-one thousand, eight hundred fourteen".