1660169688 has 96 divisors (see below), whose sum is σ = 4431639600. Its totient is φ = 518132736.

The previous prime is 1660169683. The next prime is 1660169701. The reversal of 1660169688 is 8869610661.

1660169688 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1660169688.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660169683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 770020 + ... + 772172.

Almost surely, 2^1660169688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1660169688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2215819800).

1660169688 is an abundant number, since it is smaller than the sum of its proper divisors (2771469912).

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

1660169688 is a wasteful number, since it uses less digits than its factorization.

1660169688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289 (or 2266 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 1660169688 is about 40745.1799357912. The cubic root of 1660169688 is about 1184.0884913012.

The spelling of 1660169688 in words is "one billion, six hundred sixty million, one hundred sixty-nine thousand, six hundred eighty-eight".