1198668775 has 6 divisors (see below), whose sum is σ = 1486349312. Its totient is φ = 958935000.

The previous prime is 1198668773. The next prime is 1198668841. The reversal of 1198668775 is 5778668911.

It is not a de Polignac number, because 1198668775 - 2¹ = 1198668773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198668773) 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 in 5 ways as a sum of consecutive naturals, for example, 23973351 + ... + 23973400.

Almost surely, 2^1198668775 is an apocalyptic number.

1198668775 is a deficient number, since it is larger than the sum of its proper divisors (287680537).

1198668775 is an equidigital number, since it uses as much as digits as its factorization.

1198668775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47946761 (or 47946756 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 58.

The square root of 1198668775 is about 34621.7962416741. The cubic root of 1198668775 is about 1062.2654688804.

The spelling of 1198668775 in words is "one billion, one hundred ninety-eight million, six hundred sixty-eight thousand, seven hundred seventy-five".