190668811 has 2 divisors, whose sum is σ = 190668812. Its totient is φ = 190668810.

The previous prime is 190668809. The next prime is 190668853. The reversal of 190668811 is 118866091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190668811 - 2¹ = 190668809 is a prime.

Together with 190668809, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (190678811) 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, 95334405 + 95334406.

It is an arithmetic number, because the mean of its divisors is an integer number (95334406).

Almost surely, 2^190668811 is an apocalyptic number.

190668811 is a deficient number, since it is larger than the sum of its proper divisors (1).

190668811 is an equidigital number, since it uses as much as digits as its factorization.

190668811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 40.

The square root of 190668811 is about 13808.2877649620. The cubic root of 190668811 is about 575.5634663072.

The spelling of 190668811 in words is "one hundred ninety million, six hundred sixty-eight thousand, eight hundred eleven".