169894312389 has 12 divisors (see below), whose sum is σ = 246043639296. Its totient is φ = 112967147112.

The previous prime is 169894312381. The next prime is 169894312433. The reversal of 169894312389 is 983213498961.

169894312389 is a `hidden beast` number, since 16 + 98 + 9 + 431 + 23 + 89 = 666.

It is not a de Polignac number, because 169894312389 - 2³ = 169894312381 is a prime.

It is a super-2 number, since 2×169894312389² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169894312381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24640347 + ... + 24647240.

It is an arithmetic number, because the mean of its divisors is an integer number (20503636608).

Almost surely, 2^169894312389 is an apocalyptic number.

It is an amenable number.

169894312389 is a deficient number, since it is larger than the sum of its proper divisors (76149326907).

169894312389 is a wasteful number, since it uses less digits than its factorization.

169894312389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49287976 (or 49287973 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The spelling of 169894312389 in words is "one hundred sixty-nine billion, eight hundred ninety-four million, three hundred twelve thousand, three hundred eighty-nine".