1838749 has 4 divisors (see below), whose sum is σ = 2005920. Its totient is φ = 1671580.

The previous prime is 1838747. The next prime is 1838761. The reversal of 1838749 is 9478381.

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 1838749 - 2¹ = 1838747 is a prime.

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

It is a Duffinian number.

1838749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83569 + ... + 83590.

It is an arithmetic number, because the mean of its divisors is an integer number (501480).

2^1838749 is an apocalyptic number.

It is an amenable number.

1838749 is a deficient number, since it is larger than the sum of its proper divisors (167171).

1838749 is a wasteful number, since it uses less digits than its factorization.

1838749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167170.

The product of its digits is 48384, while the sum is 40.

The square root of 1838749 is about 1356.0047935019. The cubic root of 1838749 is about 122.5107362519.

The spelling of 1838749 in words is "one million, eight hundred thirty-eight thousand, seven hundred forty-nine".