1979448684 has 12 divisors (see below), whose sum is σ = 4618713624. Its totient is φ = 659816224.

The previous prime is 1979448683. The next prime is 1979448697. The reversal of 1979448684 is 4868449791.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1979448683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82477017 + ... + 82477040.

It is an arithmetic number, because the mean of its divisors is an integer number (384892802).

Almost surely, 2^1979448684 is an apocalyptic number.

It is an amenable number.

1979448684 is an abundant number, since it is smaller than the sum of its proper divisors (2639264940).

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

1979448684 is a wasteful number, since it uses less digits than its factorization.

1979448684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164954064 (or 164954062 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 60.

The square root of 1979448684 is about 44490.9955384233. The cubic root of 1979448684 is about 1255.5906774360.

The spelling of 1979448684 in words is "one billion, nine hundred seventy-nine million, four hundred forty-eight thousand, six hundred eighty-four".