18703394474 has 16 divisors (see below), whose sum is σ = 28574411040. Its totient is φ = 9179077680.

The previous prime is 18703394471. The next prime is 18703394503. The reversal of 18703394474 is 47449330781.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18703394471) 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, 44312 + ... + 198419.

It is an arithmetic number, because the mean of its divisors is an integer number (1785900690).

Almost surely, 2^18703394474 is an apocalyptic number.

18703394474 is a deficient number, since it is larger than the sum of its proper divisors (9871016566).

18703394474 is a wasteful number, since it uses less digits than its factorization.

18703394474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243445.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 18703394474 in words is "eighteen billion, seven hundred three million, three hundred ninety-four thousand, four hundred seventy-four".