18410845117 has 12 divisors (see below), whose sum is σ = 21456315516. Its totient is φ = 15751532160.

The previous prime is 18410845087. The next prime is 18410845139. The reversal of 18410845117 is 71154801481.

It can be written as a sum of positive squares in 2 ways, for example, as 10830356761 + 7580488356 = 104069^2 + 87066^2 .

It is not a de Polignac number, because 18410845117 - 2¹¹ = 18410843069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18410845117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18410845417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 320748 + ... + 373765.

It is an arithmetic number, because the mean of its divisors is an integer number (1788026293).

Almost surely, 2^18410845117 is an apocalyptic number.

It is an amenable number.

18410845117 is a deficient number, since it is larger than the sum of its proper divisors (3045470399).

18410845117 is an equidigital number, since it uses as much as digits as its factorization.

18410845117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695068 (or 695061 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 40.

The spelling of 18410845117 in words is "eighteen billion, four hundred ten million, eight hundred forty-five thousand, one hundred seventeen".