169393668 has 12 divisors (see below), whose sum is σ = 395251920. Its totient is φ = 56464552.

The previous prime is 169393663. The next prime is 169393681. The reversal of 169393668 is 866393961.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 169393668.

It is not an unprimeable number, because it can be changed into a prime (169393663) 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 3 ways as a sum of consecutive naturals, for example, 7058058 + ... + 7058081.

It is an arithmetic number, because the mean of its divisors is an integer number (32937660).

Almost surely, 2^169393668 is an apocalyptic number.

It is an amenable number.

169393668 is an abundant number, since it is smaller than the sum of its proper divisors (225858252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169393668 is a wasteful number, since it uses less digits than its factorization.

169393668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14116146 (or 14116144 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 51.

The square root of 169393668 is about 13015.1322697850. The cubic root of 169393668 is about 553.3064387502.

The spelling of 169393668 in words is "one hundred sixty-nine million, three hundred ninety-three thousand, six hundred sixty-eight".