168912011 has 2 divisors, whose sum is σ = 168912012. Its totient is φ = 168912010.

The previous prime is 168911971. The next prime is 168912049. The reversal of 168912011 is 110219861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168912011 - 2⁶ = 168911947 is a prime.

It is not a weakly prime, because it can be changed into another prime (168912311) 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, 84456005 + 84456006.

It is an arithmetic number, because the mean of its divisors is an integer number (84456006).

Almost surely, 2^168912011 is an apocalyptic number.

168912011 is a deficient number, since it is larger than the sum of its proper divisors (1).

168912011 is an equidigital number, since it uses as much as digits as its factorization.

168912011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 29.

The square root of 168912011 is about 12996.6153670869. The cubic root of 168912011 is about 552.7815137510.

The spelling of 168912011 in words is "one hundred sixty-eight million, nine hundred twelve thousand, eleven".