2098836821 has 16 divisors (see below), whose sum is σ = 2162861568. Its totient is φ = 2035929600.

The previous prime is 2098836809. The next prime is 2098836827. The reversal of 2098836821 is 1286388902.

It is a cyclic number.

It is not a de Polignac number, because 2098836821 - 2⁶ = 2098836757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2098836827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2549816 + ... + 2550638.

It is an arithmetic number, because the mean of its divisors is an integer number (135178848).

Almost surely, 2^2098836821 is an apocalyptic number.

It is an amenable number.

2098836821 is a deficient number, since it is larger than the sum of its proper divisors (64024747).

2098836821 is an equidigital number, since it uses as much as digits as its factorization.

2098836821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 2098836821 is about 45813.0638682898. The cubic root of 2098836821 is about 1280.3426859567.

The spelling of 2098836821 in words is "two billion, ninety-eight million, eight hundred thirty-six thousand, eight hundred twenty-one".