1979329668 has 24 divisors (see below), whose sum is σ = 4622315040. Its totient is φ = 659222400.

The previous prime is 1979329661. The next prime is 1979329673. The reversal of 1979329668 is 8669239791.

1979329668 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 (1979329661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54258 + ... + 83081.

It is an arithmetic number, because the mean of its divisors is an integer number (192596460).

Almost surely, 2^1979329668 is an apocalyptic number.

It is an amenable number.

1979329668 is an abundant number, since it is smaller than the sum of its proper divisors (2642985372).

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

1979329668 is a wasteful number, since it uses less digits than its factorization.

1979329668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138547 (or 138545 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 60.

The square root of 1979329668 is about 44489.6579892451. The cubic root of 1979329668 is about 1255.5655124534.

The spelling of 1979329668 in words is "one billion, nine hundred seventy-nine million, three hundred twenty-nine thousand, six hundred sixty-eight".