1979665924 has 6 divisors (see below), whose sum is σ = 3464415374. Its totient is φ = 989832960.

The previous prime is 1979665907. The next prime is 1979665937. The reversal of 1979665924 is 4295669791.

It can be written as a sum of positive squares in only one way, i.e., 1971360000 + 8305924 = 44400^2 + 2882^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247458237 + ... + 247458244.

Almost surely, 2^1979665924 is an apocalyptic number.

It is an amenable number.

1979665924 is a deficient number, since it is larger than the sum of its proper divisors (1484749450).

1979665924 is a wasteful number, since it uses less digits than its factorization.

1979665924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494916485 (or 494916483 counting only the distinct ones).

The product of its digits is 7348320, while the sum is 58.

The square root of 1979665924 is about 44493.4368643287. The cubic root of 1979665924 is about 1255.6366084981.

The spelling of 1979665924 in words is "one billion, nine hundred seventy-nine million, six hundred sixty-five thousand, nine hundred twenty-four".