1123516613 has 2 divisors, whose sum is σ = 1123516614. Its totient is φ = 1123516612.

The previous prime is 1123516609. The next prime is 1123516633. The reversal of 1123516613 is 3166153211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1121379169 + 2137444 = 33487^2 + 1462^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123516613 - 2² = 1123516609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123516633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561758306 + 561758307.

It is an arithmetic number, because the mean of its divisors is an integer number (561758307).

Almost surely, 2^1123516613 is an apocalyptic number.

It is an amenable number.

1123516613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123516613 is an equidigital number, since it uses as much as digits as its factorization.

1123516613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3240, while the sum is 29.

The square root of 1123516613 is about 33518.8993405213. The cubic root of 1123516613 is about 1039.5845890856.

Adding to 1123516613 its reverse (3166153211), we get a palindrome (4289669824).

The spelling of 1123516613 in words is "one billion, one hundred twenty-three million, five hundred sixteen thousand, six hundred thirteen".