1115324279 has 2 divisors, whose sum is σ = 1115324280. Its totient is φ = 1115324278.

The previous prime is 1115324251. The next prime is 1115324281. The reversal of 1115324279 is 9724235111.

It is a strong prime.

It is an emirp because it is prime and its reverse (9724235111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115324279 - 2²⁰ = 1114275703 is a prime.

Together with 1115324281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115324299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557662139 + 557662140.

It is an arithmetic number, because the mean of its divisors is an integer number (557662140).

Almost surely, 2^1115324279 is an apocalyptic number.

1115324279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115324279 is an equidigital number, since it uses as much as digits as its factorization.

1115324279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 1115324279 is about 33396.4710560862. The cubic root of 1115324279 is about 1037.0516466756.

The spelling of 1115324279 in words is "one billion, one hundred fifteen million, three hundred twenty-four thousand, two hundred seventy-nine".