18385740874 has 16 divisors (see below), whose sum is σ = 28796371200. Its totient is φ = 8787469680.

The previous prime is 18385740871. The next prime is 18385740911. The reversal of 18385740874 is 47804758381.

It is not an unprimeable number, because it can be changed into a prime (18385740871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57762 + ... + 200269.

It is an arithmetic number, because the mean of its divisors is an integer number (1799773200).

Almost surely, 2^18385740874 is an apocalyptic number.

18385740874 is a deficient number, since it is larger than the sum of its proper divisors (10410630326).

18385740874 is a wasteful number, since it uses less digits than its factorization.

18385740874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259605.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 18385740874 in words is "eighteen billion, three hundred eighty-five million, seven hundred forty thousand, eight hundred seventy-four".