2188385035489 has 2 divisors, whose sum is σ = 2188385035490. Its totient is φ = 2188385035488.

The previous prime is 2188385035409. The next prime is 2188385035523. The reversal of 2188385035489 is 9845305838812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2173289227264 + 15095808225 = 1474208^2 + 122865^2 .

It is a cyclic number.

It is not a de Polignac number, because 2188385035489 - 2⁹ = 2188385034977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2188385035489.

It is not a weakly prime, because it can be changed into another prime (2188385035409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094192517744 + 1094192517745.

It is an arithmetic number, because the mean of its divisors is an integer number (1094192517745).

Almost surely, 2^{2188385035489} is an apocalyptic number.

It is an amenable number.

2188385035489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188385035489 is an equidigital number, since it uses as much as digits as its factorization.

2188385035489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66355200, while the sum is 64.

The spelling of 2188385035489 in words is "two trillion, one hundred eighty-eight billion, three hundred eighty-five million, thirty-five thousand, four hundred eighty-nine".