1996188 has 12 divisors (see below), whose sum is σ = 4657800. Its totient is φ = 665392.

The previous prime is 1996177. The next prime is 1996207. The reversal of 1996188 is 8816991.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83163 + ... + 83186.

It is an arithmetic number, because the mean of its divisors is an integer number (388150).

2^1996188 is an apocalyptic number.

It is an amenable number.

1996188 is an abundant number, since it is smaller than the sum of its proper divisors (2661612).

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

1996188 is a wasteful number, since it uses less digits than its factorization.

1996188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166356 (or 166354 counting only the distinct ones).

The product of its digits is 31104, while the sum is 42.

The square root of 1996188 is about 1412.8651740347. The cubic root of 1996188 is about 125.9120070950.

The spelling of 1996188 in words is "one million, nine hundred ninety-six thousand, one hundred eighty-eight".