2186703206393 has 2 divisors, whose sum is σ = 2186703206394. Its totient is φ = 2186703206392.

The previous prime is 2186703206293. The next prime is 2186703206407. The reversal of 2186703206393 is 3936023076812.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2151581447929 + 35121758464 = 1466827^2 + 187408^2 .

It is a cyclic number.

It is not a de Polignac number, because 2186703206393 - 2²⁸ = 2186434770937 is a prime.

It is not a weakly prime, because it can be changed into another prime (2186703206293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093351603196 + 1093351603197.

It is an arithmetic number, because the mean of its divisors is an integer number (1093351603197).

Almost surely, 2^{2186703206393} is an apocalyptic number.

It is an amenable number.

2186703206393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2186703206393 is an equidigital number, since it uses as much as digits as its factorization.

2186703206393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 2186703206393 in words is "two trillion, one hundred eighty-six billion, seven hundred three million, two hundred six thousand, three hundred ninety-three".