2098691856 has 140 divisors (see below), whose sum is σ = 6362414208. Its totient is φ = 669062592.

The previous prime is 2098691851. The next prime is 2098691869. The reversal of 2098691856 is 6581968902.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2098691851) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 264361 + ... + 272183.

Almost surely, 2^2098691856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2098691856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3181207104).

2098691856 is an abundant number, since it is smaller than the sum of its proper divisors (4263722352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2098691856 is an equidigital number, since it uses as much as digits as its factorization.

2098691856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7872 (or 7851 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 2098691856 is about 45811.4817049176. The cubic root of 2098691856 is about 1280.3132078590.

The spelling of 2098691856 in words is "two billion, ninety-eight million, six hundred ninety-one thousand, eight hundred fifty-six".