1123045613 has 2 divisors, whose sum is σ = 1123045614. Its totient is φ = 1123045612.

The previous prime is 1123045607. The next prime is 1123045621. The reversal of 1123045613 is 3165403211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1051186084 + 71859529 = 32422^2 + 8477^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123045613 - 2⁶ = 1123045549 is a prime.

It is a super-2 number, since 2×1123045613² = 2522462897757091538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123045013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561522806 + 561522807.

It is an arithmetic number, because the mean of its divisors is an integer number (561522807).

Almost surely, 2^1123045613 is an apocalyptic number.

It is an amenable number.

1123045613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123045613 is an equidigital number, since it uses as much as digits as its factorization.

1123045613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1123045613 is about 33511.8727169939. The cubic root of 1123045613 is about 1039.4392974259.

Adding to 1123045613 its reverse (3165403211), we get a palindrome (4288448824).

The spelling of 1123045613 in words is "one billion, one hundred twenty-three million, forty-five thousand, six hundred thirteen".