168343508 has 6 divisors (see below), whose sum is σ = 294601146. Its totient is φ = 84171752.

The previous prime is 168343507. The next prime is 168343517. The reversal of 168343508 is 805343861.

It can be written as a sum of positive squares in only one way, i.e., 163379524 + 4963984 = 12782^2 + 2228^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168343507) 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, 21042935 + ... + 21042942.

It is an arithmetic number, because the mean of its divisors is an integer number (49100191).

Almost surely, 2^168343508 is an apocalyptic number.

It is an amenable number.

168343508 is a deficient number, since it is larger than the sum of its proper divisors (126257638).

168343508 is a wasteful number, since it uses less digits than its factorization.

168343508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42085881 (or 42085879 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 168343508 is about 12974.7257389126. The cubic root of 168343508 is about 552.1606556462.

The spelling of 168343508 in words is "one hundred sixty-eight million, three hundred forty-three thousand, five hundred eight".