168090789 has 8 divisors (see below), whose sum is σ = 224852320. Its totient is φ = 111694896.

The previous prime is 168090787. The next prime is 168090799. The reversal of 168090789 is 987090861.

It is a happy number.

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

It is not a de Polignac number, because 168090789 - 2¹ = 168090787 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 (168090787) 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, 90334 + ... + 92175.

It is an arithmetic number, because the mean of its divisors is an integer number (28106540).

Almost surely, 2^168090789 is an apocalyptic number.

It is an amenable number.

168090789 is a deficient number, since it is larger than the sum of its proper divisors (56761531).

168090789 is a wasteful number, since it uses less digits than its factorization.

168090789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182819.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 168090789 is about 12964.9831854885. The cubic root of 168090789 is about 551.8842141889.

The spelling of 168090789 in words is "one hundred sixty-eight million, ninety thousand, seven hundred eighty-nine".