1113631636 has 24 divisors (see below), whose sum is σ = 2118032840. Its totient is φ = 509265792.

The previous prime is 1113631619. The next prime is 1113631643. The reversal of 1113631636 is 6361363111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 102010000 + 1011621636 = 10100^2 + 31806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1113631598 and 1113631607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92571 + ... + 103906.

Almost surely, 2^1113631636 is an apocalyptic number.

It is an amenable number.

1113631636 is a deficient number, since it is larger than the sum of its proper divisors (1004401204).

1113631636 is a wasteful number, since it uses less digits than its factorization.

1113631636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196603 (or 196601 counting only the distinct ones).

The product of its digits is 5832, while the sum is 31.

The square root of 1113631636 is about 33371.1197894227. The cubic root of 1113631636 is about 1036.5267628715.

Adding to 1113631636 its reverse (6361363111), we get a palindrome (7474994747).

The spelling of 1113631636 in words is "one billion, one hundred thirteen million, six hundred thirty-one thousand, six hundred thirty-six".