11369821949 has 2 divisors, whose sum is σ = 11369821950. Its totient is φ = 11369821948.

The previous prime is 11369821933. The next prime is 11369821961. The reversal of 11369821949 is 94912896311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8024934724 + 3344887225 = 89582^2 + 57835^2 .

It is a cyclic number.

It is not a de Polignac number, because 11369821949 - 2⁴ = 11369821933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11369821949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11369821249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5684910974 + 5684910975.

It is an arithmetic number, because the mean of its divisors is an integer number (5684910975).

Almost surely, 2^11369821949 is an apocalyptic number.

It is an amenable number.

11369821949 is a deficient number, since it is larger than the sum of its proper divisors (1).

11369821949 is an equidigital number, since it uses as much as digits as its factorization.

11369821949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 53.

The spelling of 11369821949 in words is "eleven billion, three hundred sixty-nine million, eight hundred twenty-one thousand, nine hundred forty-nine".