1113220636 has 24 divisors (see below), whose sum is σ = 2174667264. Its totient is φ = 494240880.

The previous prime is 1113220627. The next prime is 1113220637. The reversal of 1113220636 is 6360223111.

It is a self number, because there is not a number n which added to its sum of digits gives 1113220636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113220637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292300 + ... + 296083.

It is an arithmetic number, because the mean of its divisors is an integer number (90611136).

Almost surely, 2^1113220636 is an apocalyptic number.

It is an amenable number.

1113220636 is a deficient number, since it is larger than the sum of its proper divisors (1061446628).

1113220636 is a wasteful number, since it uses less digits than its factorization.

1113220636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588441 (or 588439 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1113220636 is about 33364.9612018357. The cubic root of 1113220636 is about 1036.3992326945.

Adding to 1113220636 its reverse (6360223111), we get a palindrome (7473443747).

The spelling of 1113220636 in words is "one billion, one hundred thirteen million, two hundred twenty thousand, six hundred thirty-six".