2828191081 has 2 divisors, whose sum is σ = 2828191082. Its totient is φ = 2828191080.

The previous prime is 2828191049. The next prime is 2828191109. The reversal of 2828191081 is 1801918282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2821734400 + 6456681 = 53120^2 + 2541^2 .

It is a cyclic number.

It is not a de Polignac number, because 2828191081 - 2⁵ = 2828191049 is a prime.

It is a super-2 number, since 2×2828191081² = 15997329581295897122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2828191001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1414095540 + 1414095541.

It is an arithmetic number, because the mean of its divisors is an integer number (1414095541).

Almost surely, 2^2828191081 is an apocalyptic number.

It is an amenable number.

2828191081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2828191081 is an equidigital number, since it uses as much as digits as its factorization.

2828191081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 40.

The square root of 2828191081 is about 53180.7397560433. The cubic root of 2828191081 is about 1414.1742206543.

The spelling of 2828191081 in words is "two billion, eight hundred twenty-eight million, one hundred ninety-one thousand, eighty-one".