1896191 has 6 divisors (see below), whose sum is σ = 2084376. Its totient is φ = 1723700.

The previous prime is 1896173. The next prime is 1896199. The reversal of 1896191 is 1916981.

It is not a de Polignac number, because 1896191 - 2¹⁰ = 1895167 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1896199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7715 + ... + 7956.

It is an arithmetic number, because the mean of its divisors is an integer number (347396).

2^1896191 is an apocalyptic number.

1896191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1896191 is a deficient number, since it is larger than the sum of its proper divisors (188185).

1896191 is a wasteful number, since it uses less digits than its factorization.

1896191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15693 (or 15682 counting only the distinct ones).

The product of its digits is 3888, while the sum is 35.

The square root of 1896191 is about 1377.0225125248. The cubic root of 1896191 is about 123.7734112086.

The spelling of 1896191 in words is "one million, eight hundred ninety-six thousand, one hundred ninety-one".