1659269916 has 144 divisors (see below), whose sum is σ = 4520355840. Its totient is φ = 512023680.

The previous prime is 1659269879. The next prime is 1659269957. The reversal of 1659269916 is 6199629561.

1659269916 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5404635 + ... + 5404941.

It is an arithmetic number, because the mean of its divisors is an integer number (31391360).

Almost surely, 2^1659269916 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 1659269916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2260177920).

1659269916 is an abundant number, since it is smaller than the sum of its proper divisors (2861085924).

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

1659269916 is a wasteful number, since it uses less digits than its factorization.

1659269916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 539 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 1659269916 is about 40734.1369860710. The cubic root of 1659269916 is about 1183.8745368259.

The spelling of 1659269916 in words is "one billion, six hundred fifty-nine million, two hundred sixty-nine thousand, nine hundred sixteen".