1116386561 has 2 divisors, whose sum is σ = 1116386562. Its totient is φ = 1116386560.

The previous prime is 1116386521. The next prime is 1116386587. The reversal of 1116386561 is 1656836111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1107624961 + 8761600 = 33281^2 + 2960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116386561 - 2⁶ = 1116386497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1116386521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558193280 + 558193281.

It is an arithmetic number, because the mean of its divisors is an integer number (558193281).

Almost surely, 2^1116386561 is an apocalyptic number.

It is an amenable number.

1116386561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116386561 is an equidigital number, since it uses as much as digits as its factorization.

1116386561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 38.

The square root of 1116386561 is about 33412.3713764827. The cubic root of 1116386561 is about 1037.3807861474.

The spelling of 1116386561 in words is "one billion, one hundred sixteen million, three hundred eighty-six thousand, five hundred sixty-one".