1115572613 has 2 divisors, whose sum is σ = 1115572614. Its totient is φ = 1115572612.

The previous prime is 1115572561. The next prime is 1115572621. The reversal of 1115572613 is 3162755111.

1115572613 = 23617² + 23618².

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 557809924 + 557762689 = 23618^2 + 23617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115572613 - 2⁸ = 1115572357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1115572613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115572643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557786306 + 557786307.

It is an arithmetic number, because the mean of its divisors is an integer number (557786307).

Almost surely, 2^1115572613 is an apocalyptic number.

1115572613 is the 23618-th centered square number.

It is an amenable number.

1115572613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115572613 is an equidigital number, since it uses as much as digits as its factorization.

1115572613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6300, while the sum is 32.

The square root of 1115572613 is about 33400.1888168316. The cubic root of 1115572613 is about 1037.1286096650.

The spelling of 1115572613 in words is "one billion, one hundred fifteen million, five hundred seventy-two thousand, six hundred thirteen".