2098850581 has 2 divisors, whose sum is σ = 2098850582. Its totient is φ = 2098850580.

The previous prime is 2098850569. The next prime is 2098850693. The reversal of 2098850581 is 1850588902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1694639556 + 404211025 = 41166^2 + 20105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2098850581 - 2⁹ = 2098850069 is a prime.

It is a super-2 number, since 2×2098850581² = 8810347522728075122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2098850881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049425290 + 1049425291.

It is an arithmetic number, because the mean of its divisors is an integer number (1049425291).

Almost surely, 2^2098850581 is an apocalyptic number.

It is an amenable number.

2098850581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2098850581 is an equidigital number, since it uses as much as digits as its factorization.

2098850581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 230400, while the sum is 46.

The square root of 2098850581 is about 45813.2140435486. The cubic root of 2098850581 is about 1280.3454839314.

The spelling of 2098850581 in words is "two billion, ninety-eight million, eight hundred fifty thousand, five hundred eighty-one".