169068809 has 8 divisors (see below), whose sum is σ = 208084800. Its totient is φ = 133768656.

The previous prime is 169068797. The next prime is 169068817. The reversal of 169068809 is 908860961.

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

It is not a de Polignac number, because 169068809 - 2²⁰ = 168020233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (169068829) 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 7 ways as a sum of consecutive naturals, for example, 928859 + ... + 929040.

It is an arithmetic number, because the mean of its divisors is an integer number (26010600).

Almost surely, 2^169068809 is an apocalyptic number.

It is an amenable number.

169068809 is a deficient number, since it is larger than the sum of its proper divisors (39015991).

169068809 is a wasteful number, since it uses less digits than its factorization.

169068809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857919.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 169068809 is about 13002.6462306717. The cubic root of 169068809 is about 552.9525065842.

The spelling of 169068809 in words is "one hundred sixty-nine million, sixty-eight thousand, eight hundred nine".