1840312 has 16 divisors (see below), whose sum is σ = 3465000. Its totient is φ = 916320.

The previous prime is 1840297. The next prime is 1840313. The reversal of 1840312 is 2130481.

It is a self number, because there is not a number n which added to its sum of digits gives 1840312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1840313) 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, 3439 + ... + 3937.

2^1840312 is an apocalyptic number.

It is an amenable number.

1840312 is a deficient number, since it is larger than the sum of its proper divisors (1624688).

1840312 is a wasteful number, since it uses less digits than its factorization.

1840312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1840312 is about 1356.5809964761. The cubic root of 1840312 is about 122.5454392030.

Adding to 1840312 its reverse (2130481), we get a palindrome (3970793).

The spelling of 1840312 in words is "one million, eight hundred forty thousand, three hundred twelve".