2049815808 has 216 divisors, whose sum is σ = 6218485728. Its totient is φ = 673339392.

The previous prime is 2049815773. The next prime is 2049815827. The reversal of 2049815808 is 8085189402.

It is a happy number.

2049815808 is a `hidden beast` number, since 2 + 0 + 498 + 158 + 0 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5163066 + ... + 5163462.

Almost surely, 2^2049815808 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 2049815808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3109242864).

2049815808 is an abundant number, since it is smaller than the sum of its proper divisors (4168669920).

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

2049815808 is an frugal number, since it uses more digits than its factorization.

2049815808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

The square root of 2049815808 is about 45274.8915846300. The cubic root of 2049815808 is about 1270.2960452301.

The spelling of 2049815808 in words is "two billion, forty-nine million, eight hundred fifteen thousand, eight hundred eight".