194406911 has 2 divisors, whose sum is σ = 194406912. Its totient is φ = 194406910.

The previous prime is 194406887. The next prime is 194406931. The reversal of 194406911 is 119604491.

It is a strong prime.

It is an emirp because it is prime and its reverse (119604491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 194406911 - 2¹⁸ = 194144767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (194406931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97203455 + 97203456.

It is an arithmetic number, because the mean of its divisors is an integer number (97203456).

Almost surely, 2^194406911 is an apocalyptic number.

194406911 is a deficient number, since it is larger than the sum of its proper divisors (1).

194406911 is an equidigital number, since it uses as much as digits as its factorization.

194406911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 194406911 is about 13942.9878792173. The cubic root of 194406911 is about 579.3004953910.

The spelling of 194406911 in words is "one hundred ninety-four million, four hundred six thousand, nine hundred eleven".