1140881249 has 2 divisors, whose sum is σ = 1140881250. Its totient is φ = 1140881248.

The previous prime is 1140881219. The next prime is 1140881267. The reversal of 1140881249 is 9421880411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 586608400 + 554272849 = 24220^2 + 23543^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1140881249 is a prime.

It is a super-2 number, since 2×1140881249² = 2603220048639600002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1140881219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 570440624 + 570440625.

It is an arithmetic number, because the mean of its divisors is an integer number (570440625).

Almost surely, 2^1140881249 is an apocalyptic number.

It is an amenable number.

1140881249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1140881249 is an equidigital number, since it uses as much as digits as its factorization.

1140881249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 1140881249 is about 33776.9336826184. The cubic root of 1140881249 is about 1044.9130362680.

The spelling of 1140881249 in words is "one billion, one hundred forty million, eight hundred eighty-one thousand, two hundred forty-nine".