1188046120649 has 2 divisors, whose sum is σ = 1188046120650. Its totient is φ = 1188046120648.

The previous prime is 1188046120633. The next prime is 1188046120669. The reversal of 1188046120649 is 9460216408811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1029196047049 + 158850073600 = 1014493^2 + 398560^2 .

It is a cyclic number.

It is not a de Polignac number, because 1188046120649 - 2⁴ = 1188046120633 is a prime.

It is a super-2 number, since 2×1188046120649² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1188046120597 and 1188046120606.

It is not a weakly prime, because it can be changed into another prime (1188046120669) 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, 594023060324 + 594023060325.

It is an arithmetic number, because the mean of its divisors is an integer number (594023060325).

Almost surely, 2^{1188046120649} is an apocalyptic number.

It is an amenable number.

1188046120649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1188046120649 is an equidigital number, since it uses as much as digits as its factorization.

1188046120649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 663552, while the sum is 50.

The spelling of 1188046120649 in words is "one trillion, one hundred eighty-eight billion, forty-six million, one hundred twenty thousand, six hundred forty-nine".