118219811 has 2 divisors, whose sum is σ = 118219812. Its totient is φ = 118219810.

The previous prime is 118219789. The next prime is 118219813. The reversal of 118219811 is 118912811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 118219811 - 2¹⁰ = 118218787 is a prime.

Together with 118219813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (118219813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59109905 + 59109906.

It is an arithmetic number, because the mean of its divisors is an integer number (59109906).

Almost surely, 2^118219811 is an apocalyptic number.

118219811 is a deficient number, since it is larger than the sum of its proper divisors (1).

118219811 is an equidigital number, since it uses as much as digits as its factorization.

118219811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 32.

The square root of 118219811 is about 10872.8934051613. The cubic root of 118219811 is about 490.7911846788.

The spelling of 118219811 in words is "one hundred eighteen million, two hundred nineteen thousand, eight hundred eleven".