168534403 has 2 divisors, whose sum is σ = 168534404. Its totient is φ = 168534402.

The previous prime is 168534343. The next prime is 168534437. The reversal of 168534403 is 304435861.

It is a happy number.

It is an a-pointer prime, because the next prime (168534437) can be obtained adding 168534403 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168534403 - 2⁹ = 168533891 is a prime.

It is not a weakly prime, because it can be changed into another prime (168534463) 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, 84267201 + 84267202.

It is an arithmetic number, because the mean of its divisors is an integer number (84267202).

Almost surely, 2^168534403 is an apocalyptic number.

168534403 is a deficient number, since it is larger than the sum of its proper divisors (1).

168534403 is an equidigital number, since it uses as much as digits as its factorization.

168534403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 168534403 is about 12982.0800721610. The cubic root of 168534403 is about 552.3692863860.

The spelling of 168534403 in words is "one hundred sixty-eight million, five hundred thirty-four thousand, four hundred three".