18345169806 has 32 divisors (see below), whose sum is σ = 37594368000. Its totient is φ = 5964457920.

The previous prime is 18345169741. The next prime is 18345169867. The reversal of 18345169806 is 60896154381.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1543635 + ... + 1555473.

It is an arithmetic number, because the mean of its divisors is an integer number (1174824000).

Almost surely, 2^18345169806 is an apocalyptic number.

18345169806 is an abundant number, since it is smaller than the sum of its proper divisors (19249198194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18345169806 is a wasteful number, since it uses less digits than its factorization.

18345169806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18184.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 18345169806 in words is "eighteen billion, three hundred forty-five million, one hundred sixty-nine thousand, eight hundred six".