2098658791 has 2 divisors, whose sum is σ = 2098658792. Its totient is φ = 2098658790.

The previous prime is 2098658753. The next prime is 2098658797. The reversal of 2098658791 is 1978568902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2098658791 - 2²³ = 2090270183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2098658797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049329395 + 1049329396.

It is an arithmetic number, because the mean of its divisors is an integer number (1049329396).

Almost surely, 2^2098658791 is an apocalyptic number.

2098658791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2098658791 is an equidigital number, since it uses as much as digits as its factorization.

2098658791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The square root of 2098658791 is about 45811.1208223505. The cubic root of 2098658791 is about 1280.3064840231.

The spelling of 2098658791 in words is "two billion, ninety-eight million, six hundred fifty-eight thousand, seven hundred ninety-one".