168194133 has 12 divisors (see below), whose sum is σ = 243853740. Its totient is φ = 111710976.

The previous prime is 168194083. The next prime is 168194149. The reversal of 168194133 is 331491861.

It can be written as a sum of positive squares in 2 ways, for example, as 47238129 + 120956004 = 6873^2 + 10998^2 .

It is not a de Polignac number, because 168194133 - 2⁸ = 168193877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168194333) 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 in 11 ways as a sum of consecutive naturals, for example, 32316 + ... + 37157.

It is an arithmetic number, because the mean of its divisors is an integer number (20321145).

Almost surely, 2^168194133 is an apocalyptic number.

It is an amenable number.

168194133 is a deficient number, since it is larger than the sum of its proper divisors (75659607).

168194133 is a wasteful number, since it uses less digits than its factorization.

168194133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69748 (or 69745 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 168194133 is about 12968.9680776845. The cubic root of 168194133 is about 551.9972924410.

The spelling of 168194133 in words is "one hundred sixty-eight million, one hundred ninety-four thousand, one hundred thirty-three".