1188065663 has 2 divisors, whose sum is σ = 1188065664. Its totient is φ = 1188065662.

The previous prime is 1188065639. The next prime is 1188065677. The reversal of 1188065663 is 3665608811.

It is a strong prime.

It is an emirp because it is prime and its reverse (3665608811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1188065663 - 2⁸ = 1188065407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1188065063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594032831 + 594032832.

It is an arithmetic number, because the mean of its divisors is an integer number (594032832).

Almost surely, 2^1188065663 is an apocalyptic number.

1188065663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1188065663 is an equidigital number, since it uses as much as digits as its factorization.

1188065663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1188065663 is about 34468.3284044933. The cubic root of 1188065663 is about 1059.1240131392.

The spelling of 1188065663 in words is "one billion, one hundred eighty-eight million, sixty-five thousand, six hundred sixty-three".