1978883306 has 16 divisors (see below), whose sum is σ = 3054348000. Its totient is φ = 961024848.

The previous prime is 1978883299. The next prime is 1978883311. The reversal of 1978883306 is 6033888791.

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, 48881 + ... + 79668.

It is an arithmetic number, because the mean of its divisors is an integer number (190896750).

Almost surely, 2^1978883306 is an apocalyptic number.

1978883306 is a deficient number, since it is larger than the sum of its proper divisors (1075464694).

1978883306 is a wasteful number, since it uses less digits than its factorization.

1978883306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128773.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 1978883306 is about 44484.6412371731. The cubic root of 1978883306 is about 1255.4711237864.

The spelling of 1978883306 in words is "one billion, nine hundred seventy-eight million, eight hundred eighty-three thousand, three hundred six".