168360993 has 6 divisors (see below), whose sum is σ = 243188114. Its totient is φ = 112240656.

The previous prime is 168360971. The next prime is 168361009. The reversal of 168360993 is 399063861.

It can be written as a sum of positive squares in only one way, i.e., 168272784 + 88209 = 12972^2 + 297^2 .

It is not a de Polignac number, because 168360993 - 2¹² = 168356897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168360293) 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 in 5 ways as a sum of consecutive naturals, for example, 9353380 + ... + 9353397.

Almost surely, 2^168360993 is an apocalyptic number.

It is an amenable number.

168360993 is a deficient number, since it is larger than the sum of its proper divisors (74827121).

168360993 is a wasteful number, since it uses less digits than its factorization.

168360993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18706783 (or 18706780 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 168360993 is about 12975.3995314210. The cubic root of 168360993 is about 552.1797717083.

The spelling of 168360993 in words is "one hundred sixty-eight million, three hundred sixty thousand, nine hundred ninety-three".