2066819278 has 16 divisors (see below), whose sum is σ = 3284194320. Its totient is φ = 972781056.

The previous prime is 2066819269. The next prime is 2066819303. The reversal of 2066819278 is 8729186602.

It is a congruent number.

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, 167251 + ... + 179182.

It is an arithmetic number, because the mean of its divisors is an integer number (205262145).

Almost surely, 2^2066819278 is an apocalyptic number.

2066819278 is a deficient number, since it is larger than the sum of its proper divisors (1217375042).

2066819278 is a wasteful number, since it uses less digits than its factorization.

2066819278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346611.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 2066819278 is about 45462.2841265152. The cubic root of 2066819278 is about 1273.7987975269.

The spelling of 2066819278 in words is "two billion, sixty-six million, eight hundred nineteen thousand, two hundred seventy-eight".