2016106181 has 4 divisors (see below), whose sum is σ = 2049157164. Its totient is φ = 1983055200.

The previous prime is 2016106163. The next prime is 2016106199. The reversal of 2016106181 is 1816016102.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2016106163) and next prime (2016106199).

It can be written as a sum of positive squares in 2 ways, for example, as 765352225 + 1250753956 = 27665^2 + 35366^2 .

It is a cyclic number.

It is not a de Polignac number, because 2016106181 - 2⁶ = 2016106117 is a prime.

It is a super-2 number, since 2×2016106181² = 8129368266132809522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2016106181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2016106681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16525400 + ... + 16525521.

It is an arithmetic number, because the mean of its divisors is an integer number (512289291).

Almost surely, 2^2016106181 is an apocalyptic number.

It is an amenable number.

2016106181 is a deficient number, since it is larger than the sum of its proper divisors (33050983).

2016106181 is an equidigital number, since it uses as much as digits as its factorization.

2016106181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33050982.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 2016106181 is about 44901.0710451321. The cubic root of 2016106181 is about 1263.2940976266.

The spelling of 2016106181 in words is "two billion, sixteen million, one hundred six thousand, one hundred eighty-one".