1821496 has 16 divisors (see below), whose sum is σ = 3463200. Its totient is φ = 897984.

The previous prime is 1821487. The next prime is 1821497. The reversal of 1821496 is 6941281.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1821497) 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, 976 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (216450).

2^1821496 is an apocalyptic number.

It is an amenable number.

1821496 is a deficient number, since it is larger than the sum of its proper divisors (1641704).

1821496 is a wasteful number, since it uses less digits than its factorization.

1821496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198 (or 3194 counting only the distinct ones).

The product of its digits is 3456, while the sum is 31.

The square root of 1821496 is about 1349.6280969215. The cubic root of 1821496 is about 122.1263583774.

It can be divided in two parts, 182 and 1496, that multiplied together give a palindrome (272272).

The spelling of 1821496 in words is "one million, eight hundred twenty-one thousand, four hundred ninety-six".