1996171 has 2 divisors, whose sum is σ = 1996172. Its totient is φ = 1996170.

The previous prime is 1996129. The next prime is 1996177. The reversal of 1996171 is 1716991.

It is a strong prime.

It is an emirp because it is prime and its reverse (1716991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1996171 is a prime.

It is a super-2 number, since 2×1996171² = 7969397322482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1996177) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998085 + 998086.

It is an arithmetic number, because the mean of its divisors is an integer number (998086).

2^1996171 is an apocalyptic number.

1996171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996171 is an equidigital number, since it uses as much as digits as its factorization.

1996171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 34.

The square root of 1996171 is about 1412.8591578781. The cubic root of 1996171 is about 125.9116496620.

The spelling of 1996171 in words is "one million, nine hundred ninety-six thousand, one hundred seventy-one".