1996191 has 16 divisors (see below), whose sum is σ = 3132000. Its totient is φ = 1252224.

The previous prime is 1996177. The next prime is 1996207. The reversal of 1996191 is 1916991.

It is not a de Polignac number, because 1996191 - 2¹¹ = 1994143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1716 + ... + 2633.

It is an arithmetic number, because the mean of its divisors is an integer number (195750).

2^1996191 is an apocalyptic number.

1996191 is a deficient number, since it is larger than the sum of its proper divisors (1135809).

1996191 is a wasteful number, since it uses less digits than its factorization.

1996191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4375 (or 4369 counting only the distinct ones).

The product of its digits is 4374, while the sum is 36.

The square root of 1996191 is about 1412.8662357067. The cubic root of 1996191 is about 125.9120701712.

It can be divided in two parts, 1996 and 191, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1996191 in words is "one million, nine hundred ninety-six thousand, one hundred ninety-one".