1979379872 has 24 divisors (see below), whose sum is σ = 4102005600. Its totient is φ = 937600704.

The previous prime is 1979379841. The next prime is 1979379881. The reversal of 1979379872 is 2789739791.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1627172 + ... + 1628387.

It is an arithmetic number, because the mean of its divisors is an integer number (170916900).

Almost surely, 2^1979379872 is an apocalyptic number.

It is an amenable number.

1979379872 is an abundant number, since it is smaller than the sum of its proper divisors (2122625728).

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

1979379872 is a wasteful number, since it uses less digits than its factorization.

1979379872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255588 (or 3255580 counting only the distinct ones).

The product of its digits is 12002256, while the sum is 62.

The square root of 1979379872 is about 44490.2222066827. Note that the first 4 decimals coincide. The cubic root of 1979379872 is about 1255.5761278112.

The spelling of 1979379872 in words is "one billion, nine hundred seventy-nine million, three hundred seventy-nine thousand, eight hundred seventy-two".