1186640738663 has 2 divisors, whose sum is σ = 1186640738664. Its totient is φ = 1186640738662.

The previous prime is 1186640738617. The next prime is 1186640738747. The reversal of 1186640738663 is 3668370466811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1186640738663 - 2³⁰ = 1185566996839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1186640731663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 593320369331 + 593320369332.

It is an arithmetic number, because the mean of its divisors is an integer number (593320369332).

Almost surely, 2^{1186640738663} is an apocalyptic number.

1186640738663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1186640738663 is an equidigital number, since it uses as much as digits as its factorization.

1186640738663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20901888, while the sum is 59.

The spelling of 1186640738663 in words is "one trillion, one hundred eighty-six billion, six hundred forty million, seven hundred thirty-eight thousand, six hundred sixty-three".