18343674271 has 32 divisors (see below), whose sum is σ = 21095097408. Its totient is φ = 15801384960.

The previous prime is 18343674263. The next prime is 18343674343. The reversal of 18343674271 is 17247634381.

It is a cyclic number.

It is not a de Polignac number, because 18343674271 - 2³ = 18343674263 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 (18343674071) 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 31 ways as a sum of consecutive naturals, for example, 15072255 + ... + 15073471.

It is an arithmetic number, because the mean of its divisors is an integer number (659221794).

Almost surely, 2^18343674271 is an apocalyptic number.

18343674271 is a deficient number, since it is larger than the sum of its proper divisors (2751423137).

18343674271 is a wasteful number, since it uses less digits than its factorization.

18343674271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771.

The product of its digits is 677376, while the sum is 46.

The spelling of 18343674271 in words is "eighteen billion, three hundred forty-three million, six hundred seventy-four thousand, two hundred seventy-one".