2628116181 has 12 divisors (see below), whose sum is σ = 3810942252. Its totient is φ = 1745258496.

The previous prime is 2628116159. The next prime is 2628116201. The reversal of 2628116181 is 1816118262.

2628116181 is a `hidden beast` number, since 2 + 6 + 28 + 11 + 618 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2386811025 + 241305156 = 48855^2 + 15534^2 .

It is not a de Polignac number, because 2628116181 - 2⁷ = 2628116053 is a prime.

It is a super-2 number, since 2×2628116181² = 13813989321668049522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2628116111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 565806 + ... + 570431.

It is an arithmetic number, because the mean of its divisors is an integer number (317578521).

Almost surely, 2^2628116181 is an apocalyptic number.

It is an amenable number.

2628116181 is a deficient number, since it is larger than the sum of its proper divisors (1182826071).

2628116181 is a wasteful number, since it uses less digits than its factorization.

2628116181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136500 (or 1136497 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 2628116181 is about 51265.1556225084. The cubic root of 2628116181 is about 1380.0077331010.

The spelling of 2628116181 in words is "two billion, six hundred twenty-eight million, one hundred sixteen thousand, one hundred eighty-one".