1979189568 has 84 divisors (see below), whose sum is σ = 5971600960. Its totient is φ = 625003776.

The previous prime is 1979189561. The next prime is 1979189603. The reversal of 1979189568 is 8659819791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979189561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79480 + ... + 101367.

Almost surely, 2^1979189568 is an apocalyptic number.

1979189568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1979189568 is an abundant number, since it is smaller than the sum of its proper divisors (3992411392).

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

1979189568 is a wasteful number, since it uses less digits than its factorization.

1979189568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180884 (or 180871 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 63.

The square root of 1979189568 is about 44488.0834381523. The cubic root of 1979189568 is about 1255.5358881347.

The spelling of 1979189568 in words is "one billion, nine hundred seventy-nine million, one hundred eighty-nine thousand, five hundred sixty-eight".