11845198889 has 2 divisors, whose sum is σ = 11845198890. Its totient is φ = 11845198888.

The previous prime is 11845198853. The next prime is 11845198943. The reversal of 11845198889 is 98889154811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8722065664 + 3123133225 = 93392^2 + 55885^2 .

It is a cyclic number.

It is not a de Polignac number, because 11845198889 - 2¹² = 11845194793 is a prime.

It is not a weakly prime, because it can be changed into another prime (11845198289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5922599444 + 5922599445.

It is an arithmetic number, because the mean of its divisors is an integer number (5922599445).

Almost surely, 2^11845198889 is an apocalyptic number.

It is an amenable number.

11845198889 is a deficient number, since it is larger than the sum of its proper divisors (1).

11845198889 is an equidigital number, since it uses as much as digits as its factorization.

11845198889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6635520, while the sum is 62.

The spelling of 11845198889 in words is "eleven billion, eight hundred forty-five million, one hundred ninety-eight thousand, eight hundred eighty-nine".