1849389 has 4 divisors (see below), whose sum is σ = 2465856. Its totient is φ = 1232924.

The previous prime is 1849381. The next prime is 1849391. The reversal of 1849389 is 9839481.

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 1849389 - 2³ = 1849381 is a prime.

It is a D-number.

1849389 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1849389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1849381) 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, 308229 + ... + 308234.

It is an arithmetic number, because the mean of its divisors is an integer number (616464).

2^1849389 is an apocalyptic number.

It is an amenable number.

1849389 is a deficient number, since it is larger than the sum of its proper divisors (616467).

1849389 is an equidigital number, since it uses as much as digits as its factorization.

1849389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616466.

The product of its digits is 62208, while the sum is 42.

The square root of 1849389 is about 1359.9224242581. The cubic root of 1849389 is about 122.7465864604.

The spelling of 1849389 in words is "one million, eight hundred forty-nine thousand, three hundred eighty-nine".