1818632 has 16 divisors (see below), whose sum is σ = 3426300. Its totient is φ = 904960.

The previous prime is 1818631. The next prime is 1818647. The reversal of 1818632 is 2368181.

It can be written as a sum of positive squares in 2 ways, for example, as 1653796 + 164836 = 1286^2 + 406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1818595 and 1818604.

It is not an unprimeable number, because it can be changed into a prime (1818631) 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 3 ways as a sum of consecutive naturals, for example, 1844 + ... + 2652.

2^1818632 is an apocalyptic number.

It is an amenable number.

1818632 is a deficient number, since it is larger than the sum of its proper divisors (1607668).

1818632 is a wasteful number, since it uses less digits than its factorization.

1818632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1096 (or 1092 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 1818632 is about 1348.5666464806. The cubic root of 1818632 is about 122.0623169943.

The spelling of 1818632 in words is "one million, eight hundred eighteen thousand, six hundred thirty-two".