163689669 has 48 divisors (see below), whose sum is σ = 279639360. Its totient is φ = 90961920.

The previous prime is 163689667. The next prime is 163689677. The reversal of 163689669 is 966986361.

It is not a de Polignac number, because 163689669 - 2¹ = 163689667 is a prime.

It is a super-2 number, since 2×163689669² = 53588615474659122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163689661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 248062 + ... + 248720.

It is an arithmetic number, because the mean of its divisors is an integer number (5825820).

Almost surely, 2^163689669 is an apocalyptic number.

It is an amenable number.

163689669 is a deficient number, since it is larger than the sum of its proper divisors (115949691).

163689669 is a wasteful number, since it uses less digits than its factorization.

163689669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 879 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 163689669 is about 12794.1263476644. The cubic root of 163689669 is about 547.0248933946.

The spelling of 163689669 in words is "one hundred sixty-three million, six hundred eighty-nine thousand, six hundred sixty-nine".