168578873 has 2 divisors, whose sum is σ = 168578874. Its totient is φ = 168578872.

The previous prime is 168578833. The next prime is 168578903. The reversal of 168578873 is 378875861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163507369 + 5071504 = 12787^2 + 2252^2 .

It is a cyclic number.

It is not a de Polignac number, because 168578873 - 2¹⁴ = 168562489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (168578833) 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, 84289436 + 84289437.

It is an arithmetic number, because the mean of its divisors is an integer number (84289437).

Almost surely, 2^168578873 is an apocalyptic number.

It is an amenable number.

168578873 is a deficient number, since it is larger than the sum of its proper divisors (1).

168578873 is an equidigital number, since it uses as much as digits as its factorization.

168578873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2257920, while the sum is 53.

The square root of 168578873 is about 12983.7927047531. The cubic root of 168578873 is about 552.4178653933.

It can be divided in two parts, 1685788 and 73, that added together give a palindrome (1685861).

The spelling of 168578873 in words is "one hundred sixty-eight million, five hundred seventy-eight thousand, eight hundred seventy-three".