18343406017 has 4 divisors (see below), whose sum is σ = 18460243156. Its totient is φ = 18226568880.

The previous prime is 18343405967. The next prime is 18343406021. The reversal of 18343406017 is 71060434381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14065722801 + 4277683216 = 118599^2 + 65404^2 .

It is a cyclic number.

It is not a de Polignac number, because 18343406017 - 2¹⁵ = 18343373249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18343406057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58418334 + ... + 58418647.

It is an arithmetic number, because the mean of its divisors is an integer number (4615060789).

Almost surely, 2^18343406017 is an apocalyptic number.

It is an amenable number.

18343406017 is a deficient number, since it is larger than the sum of its proper divisors (116837139).

18343406017 is a wasteful number, since it uses less digits than its factorization.

18343406017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116837138.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 18343406017 in words is "eighteen billion, three hundred forty-three million, four hundred six thousand, seventeen".