188444126069 has 2 divisors, whose sum is σ = 188444126070. Its totient is φ = 188444126068.

The previous prime is 188444126063. The next prime is 188444126083. The reversal of 188444126069 is 960621444881.

188444126069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188431523569 + 12602500 = 434087^2 + 3550^2 .

It is a cyclic number.

It is not a de Polignac number, because 188444126069 - 2³⁶ = 119724649333 is a prime.

It is a super-2 number, since 2×188444126069² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 188444126069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (188444126063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94222063034 + 94222063035.

It is an arithmetic number, because the mean of its divisors is an integer number (94222063035).

Almost surely, 2^188444126069 is an apocalyptic number.

It is an amenable number.

188444126069 is a deficient number, since it is larger than the sum of its proper divisors (1).

188444126069 is an equidigital number, since it uses as much as digits as its factorization.

188444126069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 188444126069 in words is "one hundred eighty-eight billion, four hundred forty-four million, one hundred twenty-six thousand, sixty-nine".