1993679824 has 20 divisors (see below), whose sum is σ = 3875947236. Its totient is φ = 993435392.

The previous prime is 1993679819. The next prime is 1993679881. The reversal of 1993679824 is 4289763991.

It can be written as a sum of positive squares in 2 ways, for example, as 1956469824 + 37210000 = 44232^2 + 6100^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207949 + ... + 217324.

Almost surely, 2^1993679824 is an apocalyptic number.

It is an amenable number.

1993679824 is a deficient number, since it is larger than the sum of its proper divisors (1882267412).

1993679824 is a wasteful number, since it uses less digits than its factorization.

1993679824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425574 (or 425568 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 58.

The square root of 1993679824 is about 44650.6419214775. The cubic root of 1993679824 is about 1258.5924956642.

The spelling of 1993679824 in words is "one billion, nine hundred ninety-three million, six hundred seventy-nine thousand, eight hundred twenty-four".