11845508189 has 2 divisors, whose sum is σ = 11845508190. Its totient is φ = 11845508188.

The previous prime is 11845508167. The next prime is 11845508221. The reversal of 11845508189 is 98180554811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11838528025 + 6980164 = 108805^2 + 2642^2 .

It is a cyclic number.

It is not a de Polignac number, because 11845508189 - 2²⁸ = 11577072733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11845108189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5922754094 + 5922754095.

It is an arithmetic number, because the mean of its divisors is an integer number (5922754095).

Almost surely, 2^11845508189 is an apocalyptic number.

It is an amenable number.

11845508189 is a deficient number, since it is larger than the sum of its proper divisors (1).

11845508189 is an equidigital number, since it uses as much as digits as its factorization.

11845508189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 460800, while the sum is 50.

The spelling of 11845508189 in words is "eleven billion, eight hundred forty-five million, five hundred eight thousand, one hundred eighty-nine".