1115411249 has 2 divisors, whose sum is σ = 1115411250. Its totient is φ = 1115411248.

The previous prime is 1115411239. The next prime is 1115411251. The reversal of 1115411249 is 9421145111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1111022224 + 4389025 = 33332^2 + 2095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115411249 - 2⁸ = 1115410993 is a prime.

Together with 1115411251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1115411239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557705624 + 557705625.

It is an arithmetic number, because the mean of its divisors is an integer number (557705625).

Almost surely, 2^1115411249 is an apocalyptic number.

It is an amenable number.

1115411249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115411249 is an equidigital number, since it uses as much as digits as its factorization.

1115411249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 29.

The square root of 1115411249 is about 33397.7731143859. The cubic root of 1115411249 is about 1037.0786014782.

The spelling of 1115411249 in words is "one billion, one hundred fifteen million, four hundred eleven thousand, two hundred forty-nine".