11178808189 has 2 divisors, whose sum is σ = 11178808190. Its totient is φ = 11178808188.

The previous prime is 11178808171. The next prime is 11178808229. The reversal of 11178808189 is 98180887111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9381472164 + 1797336025 = 96858^2 + 42395^2 .

It is a cyclic number.

It is not a de Polignac number, because 11178808189 - 2⁹ = 11178807677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11178808789) 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, 5589404094 + 5589404095.

It is an arithmetic number, because the mean of its divisors is an integer number (5589404095).

Almost surely, 2^11178808189 is an apocalyptic number.

It is an amenable number.

11178808189 is a deficient number, since it is larger than the sum of its proper divisors (1).

11178808189 is an equidigital number, since it uses as much as digits as its factorization.

11178808189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 52.

The spelling of 11178808189 in words is "eleven billion, one hundred seventy-eight million, eight hundred eight thousand, one hundred eighty-nine".