168417813 has 8 divisors (see below), whose sum is σ = 224630848. Its totient is φ = 112241664.

The previous prime is 168417811. The next prime is 168417853. The reversal of 168417813 is 318714861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 168417813 - 2¹ = 168417811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168417811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4245 + ... + 18837.

It is an arithmetic number, because the mean of its divisors is an integer number (28078856).

Almost surely, 2^168417813 is an apocalyptic number.

It is an amenable number.

168417813 is a deficient number, since it is larger than the sum of its proper divisors (56213035).

168417813 is a wasteful number, since it uses less digits than its factorization.

168417813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18443.

The product of its digits is 32256, while the sum is 39.

The square root of 168417813 is about 12977.5888746716. The cubic root of 168417813 is about 552.2418829396.

The spelling of 168417813 in words is "one hundred sixty-eight million, four hundred seventeen thousand, eight hundred thirteen".