1818236 has 12 divisors (see below), whose sum is σ = 3636528. Its totient is φ = 779232.

The previous prime is 1818233. The next prime is 1818241. The reversal of 1818236 is 6328181.

1818236 = T₂₇₃ + T₂₇₄ + ... + T₃₁₄.

1818236 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1818199 and 1818208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818233) 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, 32441 + ... + 32496.

It is an arithmetic number, because the mean of its divisors is an integer number (303044).

2^1818236 is an apocalyptic number.

It is an amenable number.

1818236 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1818236 is a wasteful number, since it uses less digits than its factorization.

1818236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64948 (or 64946 counting only the distinct ones).

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

The square root of 1818236 is about 1348.4198159327. The cubic root of 1818236 is about 122.0534568206.

The spelling of 1818236 in words is "one million, eight hundred eighteen thousand, two hundred thirty-six".