168873401 has 2 divisors, whose sum is σ = 168873402. Its totient is φ = 168873400.

The previous prime is 168873391. The next prime is 168873403. The reversal of 168873401 is 104378861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100000000 + 68873401 = 10000^2 + 8299^2 .

It is a cyclic number.

It is not a de Polignac number, because 168873401 - 2¹⁰ = 168872377 is a prime.

Together with 168873403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (168873403) 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, 84436700 + 84436701.

It is an arithmetic number, because the mean of its divisors is an integer number (84436701).

Almost surely, 2^168873401 is an apocalyptic number.

It is an amenable number.

168873401 is a deficient number, since it is larger than the sum of its proper divisors (1).

168873401 is an equidigital number, since it uses as much as digits as its factorization.

168873401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 168873401 is about 12995.1298954647. The cubic root of 168873401 is about 552.7393921743.

The spelling of 168873401 in words is "one hundred sixty-eight million, eight hundred seventy-three thousand, four hundred one".