2098615021 has 2 divisors, whose sum is σ = 2098615022. Its totient is φ = 2098615020.

The previous prime is 2098614989. The next prime is 2098615033. The reversal of 2098615021 is 1205168902.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1224230121 + 874384900 = 34989^2 + 29570^2 .

It is a cyclic number.

It is not a de Polignac number, because 2098615021 - 2⁵ = 2098614989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2098615081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049307510 + 1049307511.

It is an arithmetic number, because the mean of its divisors is an integer number (1049307511).

Almost surely, 2^2098615021 is an apocalyptic number.

It is an amenable number.

2098615021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2098615021 is an equidigital number, since it uses as much as digits as its factorization.

2098615021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 2098615021 is about 45810.6430974288. The cubic root of 2098615021 is about 1280.2975831949.

The spelling of 2098615021 in words is "two billion, ninety-eight million, six hundred fifteen thousand, twenty-one".