168872933 has 2 divisors, whose sum is σ = 168872934. Its totient is φ = 168872932.

The previous prime is 168872881. The next prime is 168872947. The reversal of 168872933 is 339278861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167391844 + 1481089 = 12938^2 + 1217^2 .

It is a cyclic number.

It is not a de Polignac number, because 168872933 - 2¹⁰ = 168871909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168872633) 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, 84436466 + 84436467.

It is an arithmetic number, because the mean of its divisors is an integer number (84436467).

Almost surely, 2^168872933 is an apocalyptic number.

It is an amenable number.

168872933 is a deficient number, since it is larger than the sum of its proper divisors (1).

168872933 is an equidigital number, since it uses as much as digits as its factorization.

168872933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 47.

The square root of 168872933 is about 12995.1118887065. Note that the first 3 decimals coincide. The cubic root of 168872933 is about 552.7388815704.

The spelling of 168872933 in words is "one hundred sixty-eight million, eight hundred seventy-two thousand, nine hundred thirty-three".