1198811 has 2 divisors, whose sum is σ = 1198812. Its totient is φ = 1198810.

The previous prime is 1198793. The next prime is 1198819. The reversal of 1198811 is 1188911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1198811 - 2¹⁸ = 936667 is a prime.

It is not a weakly prime, because it can be changed into another prime (1198819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599405 + 599406.

It is an arithmetic number, because the mean of its divisors is an integer number (599406).

2^1198811 is an apocalyptic number.

1198811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198811 is an equidigital number, since it uses as much as digits as its factorization.

1198811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 29.

The square root of 1198811 is about 1094.9022787445. The cubic root of 1198811 is about 106.2307480690.

The spelling of 1198811 in words is "one million, one hundred ninety-eight thousand, eight hundred eleven".