2186997713 has 4 divisors (see below), whose sum is σ = 2201675700. Its totient is φ = 2172319728.

The previous prime is 2186997643. The next prime is 2186997727. The reversal of 2186997713 is 3177996812.

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 543262864 + 1643734849 = 23308^2 + 40543^2 .

It is a cyclic number.

It is not a de Polignac number, because 2186997713 - 2⁸ = 2186997457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2186997763) 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 3 ways as a sum of consecutive naturals, for example, 7338770 + ... + 7339067.

It is an arithmetic number, because the mean of its divisors is an integer number (550418925).

Almost surely, 2^2186997713 is an apocalyptic number.

It is an amenable number.

2186997713 is a deficient number, since it is larger than the sum of its proper divisors (14677987).

2186997713 is a wasteful number, since it uses less digits than its factorization.

2186997713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14677986.

The product of its digits is 1143072, while the sum is 53.

The square root of 2186997713 is about 46765.3473525002. The cubic root of 2186997713 is about 1298.0241608177.

Subtracting 2186997713 from its reverse (3177996812), we obtain a palindrome (990999099).

The spelling of 2186997713 in words is "two billion, one hundred eighty-six million, nine hundred ninety-seven thousand, seven hundred thirteen".