168808789 has 4 divisors (see below), whose sum is σ = 169926880. Its totient is φ = 167690700.

The previous prime is 168808751. The next prime is 168808817. The reversal of 168808789 is 987808861.

168808789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 987808861 = 13 ⋅75985297.

It is a cyclic number.

It is not a de Polignac number, because 168808789 - 2¹¹ = 168806741 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 (168808489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 558819 + ... + 559120.

It is an arithmetic number, because the mean of its divisors is an integer number (42481720).

Almost surely, 2^168808789 is an apocalyptic number.

It is an amenable number.

168808789 is a deficient number, since it is larger than the sum of its proper divisors (1118091).

168808789 is a wasteful number, since it uses less digits than its factorization.

168808789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118090.

The product of its (nonzero) digits is 1548288, while the sum is 55.

The square root of 168808789 is about 12992.6436493887. The cubic root of 168808789 is about 552.6688893537.

The spelling of 168808789 in words is "one hundred sixty-eight million, eight hundred eight thousand, seven hundred eighty-nine".