1601110116 has 36 divisors (see below), whose sum is σ = 4285325772. Its totient is φ = 502308864.

The previous prime is 1601110111. The next prime is 1601110151. The reversal of 1601110116 is 6110111061.

It can be written as a sum of positive squares in 2 ways, for example, as 764743716 + 836366400 = 27654^2 + 28920^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1601110111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1307485 + ... + 1308708.

It is an arithmetic number, because the mean of its divisors is an integer number (119036827).

Almost surely, 2^1601110116 is an apocalyptic number.

It is an amenable number.

1601110116 is an abundant number, since it is smaller than the sum of its proper divisors (2684215656).

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

1601110116 is a wasteful number, since it uses less digits than its factorization.

1601110116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616220 (or 2616215 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The square root of 1601110116 is about 40013.8740438863. The cubic root of 1601110116 is about 1169.8775326559.

Adding to 1601110116 its reverse (6110111061), we get a palindrome (7711221177).

The spelling of 1601110116 in words is "one billion, six hundred one million, one hundred ten thousand, one hundred sixteen".