1113811249 has 2 divisors, whose sum is σ = 1113811250. Its totient is φ = 1113811248.

The previous prime is 1113811247. The next prime is 1113811267. The reversal of 1113811249 is 9421183111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 904806400 + 209004849 = 30080^2 + 14457^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113811249 - 2¹ = 1113811247 is a prime.

Together with 1113811247, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1113811249.

It is not a weakly prime, because it can be changed into another prime (1113811247) 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, 556905624 + 556905625.

It is an arithmetic number, because the mean of its divisors is an integer number (556905625).

Almost surely, 2^1113811249 is an apocalyptic number.

It is an amenable number.

1113811249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113811249 is an equidigital number, since it uses as much as digits as its factorization.

1113811249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 31.

The square root of 1113811249 is about 33373.8108252564. The cubic root of 1113811249 is about 1036.5824855681.

The spelling of 1113811249 in words is "one billion, one hundred thirteen million, eight hundred eleven thousand, two hundred forty-nine".