1601109328 has 160 divisors (see below), whose sum is σ = 4150845440. Its totient is φ = 580400640.

The previous prime is 1601109319. The next prime is 1601109361. The reversal of 1601109328 is 8239011061.

It is a super-2 number, since 2×1601109328² = 5127102160417223168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 1601109328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 856651 + ... + 858517.

It is an arithmetic number, because the mean of its divisors is an integer number (25942784).

Almost surely, 2^1601109328 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 1601109328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2075422720).

1601109328 is an abundant number, since it is smaller than the sum of its proper divisors (2549736112).

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

1601109328 is a wasteful number, since it uses less digits than its factorization.

1601109328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945 (or 1939 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 1601109328 is about 40013.8641973004. The cubic root of 1601109328 is about 1169.8773407341.

The spelling of 1601109328 in words is "one billion, six hundred one million, one hundred nine thousand, three hundred twenty-eight".