1115242613 has 4 divisors (see below), whose sum is σ = 1115626560. Its totient is φ = 1114858668.

The previous prime is 1115242573. The next prime is 1115242643. The reversal of 1115242613 is 3162425111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1115242613 - 2¹⁸ = 1114980469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115242643) 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 in 3 ways as a sum of consecutive naturals, for example, 187583 + ... + 193436.

It is an arithmetic number, because the mean of its divisors is an integer number (278906640).

Almost surely, 2^1115242613 is an apocalyptic number.

It is an amenable number.

1115242613 is a deficient number, since it is larger than the sum of its proper divisors (383947).

1115242613 is an equidigital number, since it uses as much as digits as its factorization.

1115242613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383946.

The product of its digits is 1440, while the sum is 26.

The square root of 1115242613 is about 33395.2483596095. The cubic root of 1115242613 is about 1037.0263344776.

Adding to 1115242613 its reverse (3162425111), we get a palindrome (4277667724).

The spelling of 1115242613 in words is "one billion, one hundred fifteen million, two hundred forty-two thousand, six hundred thirteen".