1601712216 has 96 divisors (see below), whose sum is σ = 4822446720. Its totient is φ = 476928000.

The previous prime is 1601712193. The next prime is 1601712271. The reversal of 1601712216 is 6122171061.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1601712216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1416 + ... + 56616.

It is an arithmetic number, because the mean of its divisors is an integer number (50233820).

Almost surely, 2^1601712216 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 1601712216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2411223360).

1601712216 is an abundant number, since it is smaller than the sum of its proper divisors (3220734504).

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

1601712216 is a wasteful number, since it uses less digits than its factorization.

1601712216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55257 (or 55250 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 1601712216 is about 40021.3969771171. The cubic root of 1601712216 is about 1170.0241590453.

Adding to 1601712216 its reverse (6122171061), we get a palindrome (7723883277).

The spelling of 1601712216 in words is "one billion, six hundred one million, seven hundred twelve thousand, two hundred sixteen".