2089647920 has 20 divisors (see below), whose sum is σ = 4858431600. Its totient is φ = 835859136.

The previous prime is 2089647919. The next prime is 2089647971. The reversal of 2089647920 is 297469802.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13060220 + ... + 13060379.

It is an arithmetic number, because the mean of its divisors is an integer number (242921580).

Almost surely, 2^2089647920 is an apocalyptic number.

2089647920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2089647920 is an abundant number, since it is smaller than the sum of its proper divisors (2768783680).

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

2089647920 is a wasteful number, since it uses less digits than its factorization.

2089647920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26120612 (or 26120606 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 2089647920 is about 45712.6669534824. Note that the first 3 decimals coincide. The cubic root of 2089647920 is about 1278.4714664181.

The spelling of 2089647920 in words is "two billion, eighty-nine million, six hundred forty-seven thousand, nine hundred twenty".