2065780826 has 16 divisors (see below), whose sum is σ = 3121381824. Its totient is φ = 1025335584.

The previous prime is 2065780819. The next prime is 2065780877. The reversal of 2065780826 is 6280875602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311966 + ... + 318518.

It is an arithmetic number, because the mean of its divisors is an integer number (195086364).

Almost surely, 2^2065780826 is an apocalyptic number.

2065780826 is a deficient number, since it is larger than the sum of its proper divisors (1055600998).

2065780826 is a wasteful number, since it uses less digits than its factorization.

2065780826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7685.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 2065780826 is about 45450.8616639993. The cubic root of 2065780826 is about 1273.5854261042.

The spelling of 2065780826 in words is "two billion, sixty-five million, seven hundred eighty thousand, eight hundred twenty-six".