1896389 has 4 divisors (see below), whose sum is σ = 2068800. Its totient is φ = 1723980.

The previous prime is 1896353. The next prime is 1896407. The reversal of 1896389 is 9836981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1896389 - 2⁸ = 1896133 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1896689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86189 + ... + 86210.

It is an arithmetic number, because the mean of its divisors is an integer number (517200).

2^1896389 is an apocalyptic number.

It is an amenable number.

1896389 is a deficient number, since it is larger than the sum of its proper divisors (172411).

1896389 is a wasteful number, since it uses less digits than its factorization.

1896389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172410.

The product of its digits is 93312, while the sum is 44.

The square root of 1896389 is about 1377.0944048975. The cubic root of 1896389 is about 123.7777191928. Note that the first 4 decimals are identical.

The spelling of 1896389 in words is "one million, eight hundred ninety-six thousand, three hundred eighty-nine".