168633923 has 2 divisors, whose sum is σ = 168633924. Its totient is φ = 168633922.

The previous prime is 168633889. The next prime is 168633929. The reversal of 168633923 is 329336861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168633923 - 2⁸ = 168633667 is a prime.

It is not a weakly prime, because it can be changed into another prime (168633929) 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 as a sum of consecutive naturals, namely, 84316961 + 84316962.

It is an arithmetic number, because the mean of its divisors is an integer number (84316962).

Almost surely, 2^168633923 is an apocalyptic number.

168633923 is a deficient number, since it is larger than the sum of its proper divisors (1).

168633923 is an equidigital number, since it uses as much as digits as its factorization.

168633923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 41.

The square root of 168633923 is about 12985.9124823787. The cubic root of 168633923 is about 552.4779901553.

The spelling of 168633923 in words is "one hundred sixty-eight million, six hundred thirty-three thousand, nine hundred twenty-three".