1198718827 has 2 divisors, whose sum is σ = 1198718828. Its totient is φ = 1198718826.

The previous prime is 1198718813. The next prime is 1198718831. The reversal of 1198718827 is 7288178911.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1198718827 is a prime.

It is not a weakly prime, because it can be changed into another prime (1198718867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599359413 + 599359414.

It is an arithmetic number, because the mean of its divisors is an integer number (599359414).

Almost surely, 2^1198718827 is an apocalyptic number.

1198718827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198718827 is an equidigital number, since it uses as much as digits as its factorization.

1198718827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 52.

The square root of 1198718827 is about 34622.5190735741. The cubic root of 1198718827 is about 1062.2802541078.

The spelling of 1198718827 in words is "one billion, one hundred ninety-eight million, seven hundred eighteen thousand, eight hundred twenty-seven".