1849345 has 8 divisors (see below), whose sum is σ = 2349864. Its totient is φ = 1392384.

The previous prime is 1849333. The next prime is 1849349. The reversal of 1849345 is 5439481.

It can be written as a sum of positive squares in 4 ways, for example, as 802816 + 1046529 = 896^2 + 1023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1849345 - 2⁷ = 1849217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1849345.

It is not an unprimeable number, because it can be changed into a prime (1849349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10794 + ... + 10963.

It is an arithmetic number, because the mean of its divisors is an integer number (293733).

It is a Proth number, since it is equal to 903 ⋅ 2¹¹ + 1 and 903 < 2¹¹.

2^1849345 is an apocalyptic number.

It is an amenable number.

1849345 is a deficient number, since it is larger than the sum of its proper divisors (500519).

1849345 is a wasteful number, since it uses less digits than its factorization.

1849345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21779.

The product of its digits is 17280, while the sum is 34.

The square root of 1849345 is about 1359.9062467685. The cubic root of 1849345 is about 122.7456130050.

The spelling of 1849345 in words is "one million, eight hundred forty-nine thousand, three hundred forty-five".