168794813 has 16 divisors (see below), whose sum is σ = 189305856. Its totient is φ = 149189040.

The previous prime is 168794741. The next prime is 168794839. The reversal of 168794813 is 318497861.

It is not a de Polignac number, because 168794813 - 2¹⁰ = 168793789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168794863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83270 + ... + 85272.

It is an arithmetic number, because the mean of its divisors is an integer number (11831616).

Almost surely, 2^168794813 is an apocalyptic number.

It is an amenable number.

168794813 is a deficient number, since it is larger than the sum of its proper divisors (20511043).

168794813 is a wasteful number, since it uses less digits than its factorization.

168794813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224.

The product of its digits is 290304, while the sum is 47.

The square root of 168794813 is about 12992.1057954436. The cubic root of 168794813 is about 552.6536367640.

The spelling of 168794813 in words is "one hundred sixty-eight million, seven hundred ninety-four thousand, eight hundred thirteen".