2005098181 has 2 divisors, whose sum is σ = 2005098182. Its totient is φ = 2005098180.

The previous prime is 2005098143. The next prime is 2005098187. The reversal of 2005098181 is 1818905002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1032593956 + 972504225 = 32134^2 + 31185^2 .

It is a cyclic number.

It is not a de Polignac number, because 2005098181 - 2¹¹ = 2005096133 is a prime.

It is a super-2 number, since 2×2005098181² = 8040837430899017522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2005098187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002549090 + 1002549091.

It is an arithmetic number, because the mean of its divisors is an integer number (1002549091).

Almost surely, 2^2005098181 is an apocalyptic number.

It is an amenable number.

2005098181 is a deficient number, since it is larger than the sum of its proper divisors (1).

2005098181 is an equidigital number, since it uses as much as digits as its factorization.

2005098181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 2005098181 is about 44778.3226684520. The cubic root of 2005098181 is about 1260.9906924635.

The spelling of 2005098181 in words is "two billion, five million, ninety-eight thousand, one hundred eighty-one".