1993361188 has 24 divisors (see below), whose sum is σ = 4293394112. Its totient is φ = 788582304.

The previous prime is 1993361179. The next prime is 1993361203. The reversal of 1993361188 is 8811633991.

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, 2737770 + ... + 2738497.

Almost surely, 2^1993361188 is an apocalyptic number.

It is an amenable number.

1993361188 is an abundant number, since it is smaller than the sum of its proper divisors (2300032924).

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

1993361188 is a wasteful number, since it uses less digits than its factorization.

1993361188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5476291 (or 5476289 counting only the distinct ones).

The product of its digits is 279936, while the sum is 49.

The square root of 1993361188 is about 44647.0736779019. The cubic root of 1993361188 is about 1258.5254413926.

The spelling of 1993361188 in words is "one billion, nine hundred ninety-three million, three hundred sixty-one thousand, one hundred eighty-eight".