1126623636 has 18 divisors (see below), whose sum is σ = 2847854282. Its totient is φ = 375541200.

The previous prime is 1126623611. The next prime is 1126623637. The reversal of 1126623636 is 6363266211.

1126623636 is a `hidden beast` number, since 1 + 1 + 26 + 623 + 6 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1118501136 + 8122500 = 33444^2 + 2850^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 31295101 = 1126623636 / (1 + 1 + 2 + 6 + 6 + 2 + 3 + 6 + 3 + 6).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1126623636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126623637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15647515 + ... + 15647586.

Almost surely, 2^1126623636 is an apocalyptic number.

It is an amenable number.

1126623636 is an abundant number, since it is smaller than the sum of its proper divisors (1721230646).

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

1126623636 is a wasteful number, since it uses less digits than its factorization.

1126623636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31295111 (or 31295106 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 1126623636 is about 33565.2146723360. The cubic root of 1126623636 is about 1040.5420116056.

Adding to 1126623636 its reverse (6363266211), we get a palindrome (7489889847).

The spelling of 1126623636 in words is "one billion, one hundred twenty-six million, six hundred twenty-three thousand, six hundred thirty-six".