1979332866 has 96 divisors (see below), whose sum is σ = 5208053760. Its totient is φ = 530683488.

The previous prime is 1979332829. The next prime is 1979332867. The reversal of 1979332866 is 6682339791.

1979332866 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1979332867) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 252295 + ... + 260021.

It is an arithmetic number, because the mean of its divisors is an integer number (54250560).

Almost surely, 2^1979332866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1979332866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2604026880).

1979332866 is an abundant number, since it is smaller than the sum of its proper divisors (3228720894).

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

1979332866 is a wasteful number, since it uses less digits than its factorization.

1979332866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7868 (or 7865 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 1979332866 is about 44489.6939301677. The cubic root of 1979332866 is about 1255.5661886582.

The spelling of 1979332866 in words is "one billion, nine hundred seventy-nine million, three hundred thirty-two thousand, eight hundred sixty-six".