1993188 has 12 divisors (see below), whose sum is σ = 4650800. Its totient is φ = 664392.

The previous prime is 1993163. The next prime is 1993193. The reversal of 1993188 is 8813991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

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, 83038 + ... + 83061.

2^1993188 is an apocalyptic number.

It is an amenable number.

1993188 is an abundant number, since it is smaller than the sum of its proper divisors (2657612).

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

1993188 is a wasteful number, since it uses less digits than its factorization.

1993188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166106 (or 166104 counting only the distinct ones).

The product of its digits is 15552, while the sum is 39.

The square root of 1993188 is about 1411.8031024190. The cubic root of 1993188 is about 125.8488992434.

The spelling of 1993188 in words is "one million, nine hundred ninety-three thousand, one hundred eighty-eight".