1996189 has 8 divisors (see below), whose sum is σ = 2200352. Its totient is φ = 1799280.

The previous prime is 1996177. The next prime is 1996207. The reversal of 1996189 is 9816991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1996189 - 2⁷ = 1996061 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an Ulam number.

It is a Duffinian number.

1996189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1227 + ... + 2344.

It is an arithmetic number, because the mean of its divisors is an integer number (275044).

2^1996189 is an apocalyptic number.

It is an amenable number.

1996189 is a deficient number, since it is larger than the sum of its proper divisors (204163).

1996189 is a wasteful number, since it uses less digits than its factorization.

1996189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627.

The product of its digits is 34992, while the sum is 43.

The square root of 1996189 is about 1412.8655279254. The cubic root of 1996189 is about 125.9120281204.

The spelling of 1996189 in words is "one million, nine hundred ninety-six thousand, one hundred eighty-nine".