1189006811 has 2 divisors, whose sum is σ = 1189006812. Its totient is φ = 1189006810.

The previous prime is 1189006727. The next prime is 1189006813. The reversal of 1189006811 is 1186009811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1189006811 - 2¹⁰ = 1189005787 is a prime.

Together with 1189006813, it forms a pair of twin primes.

It is a Chen prime.

1189006811 is a strobogrammatic number because it is the same when read upside-down.

It is not a weakly prime, because it can be changed into another prime (1189006813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594503405 + 594503406.

It is an arithmetic number, because the mean of its divisors is an integer number (594503406).

Almost surely, 2^1189006811 is an apocalyptic number.

1189006811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189006811 is an equidigital number, since it uses as much as digits as its factorization.

1189006811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 35.

The square root of 1189006811 is about 34481.9780610104. The cubic root of 1189006811 is about 1059.4036074929.

The spelling of 1189006811 in words is "one billion, one hundred eighty-nine million, six thousand, eight hundred eleven".