3686944117 has 4 divisors (see below), whose sum is σ = 3707314156. Its totient is φ = 3666574080.

The previous prime is 3686944109. The next prime is 3686944213. The reversal of 3686944117 is 7114496863.

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 1919666596 + 1767277521 = 43814^2 + 42039^2 .

It is a cyclic number.

It is not a de Polignac number, because 3686944117 - 2³ = 3686944109 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 (3686944517) 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, 10184748 + ... + 10185109.

It is an arithmetic number, because the mean of its divisors is an integer number (926828539).

Almost surely, 2^3686944117 is an apocalyptic number.

It is an amenable number.

3686944117 is a deficient number, since it is larger than the sum of its proper divisors (20370039).

3686944117 is a wasteful number, since it uses less digits than its factorization.

3686944117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20370038.

The product of its digits is 870912, while the sum is 49.

The square root of 3686944117 is about 60720.2117667585. The cubic root of 3686944117 is about 1544.8590155633.

The spelling of 3686944117 in words is "three billion, six hundred eighty-six million, nine hundred forty-four thousand, one hundred seventeen".