1993638882 has 16 divisors (see below), whose sum is σ = 3992526432. Its totient is φ = 663671520.

The previous prime is 1993638877. The next prime is 1993638917. The reversal of 1993638882 is 2888363991.

1993638882 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213748 + ... + 222879.

It is an arithmetic number, because the mean of its divisors is an integer number (249532902).

Almost surely, 2^1993638882 is an apocalyptic number.

1993638882 is an abundant number, since it is smaller than the sum of its proper divisors (1998887550).

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

1993638882 is a wasteful number, since it uses less digits than its factorization.

1993638882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437393.

The product of its digits is 4478976, while the sum is 57.

The square root of 1993638882 is about 44650.1834486713. The cubic root of 1993638882 is about 1258.5838801640.

The spelling of 1993638882 in words is "one billion, nine hundred ninety-three million, six hundred thirty-eight thousand, eight hundred eighty-two".