1822563 has 12 divisors (see below), whose sum is σ = 2723760. Its totient is φ = 1172976.

The previous prime is 1822559. The next prime is 1822571. The reversal of 1822563 is 3652281.

It is not a de Polignac number, because 1822563 - 2² = 1822559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1822063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3231 + ... + 3752.

It is an arithmetic number, because the mean of its divisors is an integer number (226980).

2^1822563 is an apocalyptic number.

1822563 is a deficient number, since it is larger than the sum of its proper divisors (901197).

1822563 is a wasteful number, since it uses less digits than its factorization.

1822563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7018 (or 7015 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1822563 is about 1350.0233331317. The cubic root of 1822563 is about 122.1502002064.

The spelling of 1822563 in words is "one million, eight hundred twenty-two thousand, five hundred sixty-three".