2185189003813 has 2 divisors, whose sum is σ = 2185189003814. Its totient is φ = 2185189003812.

The previous prime is 2185189003787. The next prime is 2185189003841. The reversal of 2185189003813 is 3183009815812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1355308087329 + 829880916484 = 1164177^2 + 910978^2 .

It is a cyclic number.

It is not a de Polignac number, because 2185189003813 - 2⁹ = 2185189003301 is a prime.

It is a super-3 number, since 3×2185189003813³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2185189003843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092594501906 + 1092594501907.

It is an arithmetic number, because the mean of its divisors is an integer number (1092594501907).

Almost surely, 2^{2185189003813} is an apocalyptic number.

It is an amenable number.

2185189003813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185189003813 is an equidigital number, since it uses as much as digits as its factorization.

2185189003813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 2185189003813 in words is "two trillion, one hundred eighty-five billion, one hundred eighty-nine million, three thousand, eight hundred thirteen".