2098043891 has 2 divisors, whose sum is σ = 2098043892. Its totient is φ = 2098043890.

The previous prime is 2098043887. The next prime is 2098043921. The reversal of 2098043891 is 1983408902.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2098043891 - 2² = 2098043887 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2098043291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049021945 + 1049021946.

It is an arithmetic number, because the mean of its divisors is an integer number (1049021946).

Almost surely, 2^2098043891 is an apocalyptic number.

2098043891 is a deficient number, since it is larger than the sum of its proper divisors (1).

2098043891 is an equidigital number, since it uses as much as digits as its factorization.

2098043891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 2098043891 is about 45804.4090781663. The cubic root of 2098043891 is about 1280.1814299710.

The spelling of 2098043891 in words is "two billion, ninety-eight million, forty-three thousand, eight hundred ninety-one".