1133621361 has 12 divisors (see below), whose sum is σ = 1690274560. Its totient is φ = 731368440.

The previous prime is 1133621351. The next prime is 1133621389. The reversal of 1133621361 is 1631263311.

1133621361 is a `hidden beast` number, since 1 + 1 + 3 + 3 + 621 + 36 + 1 = 666.

It is not a de Polignac number, because 1133621361 - 2⁶ = 1133621297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133621351) 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 11 ways as a sum of consecutive naturals, for example, 2031301 + ... + 2031858.

Almost surely, 2^1133621361 is an apocalyptic number.

It is an amenable number.

1133621361 is a deficient number, since it is larger than the sum of its proper divisors (556653199).

1133621361 is a wasteful number, since it uses less digits than its factorization.

1133621361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063196 (or 4063193 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 1133621361 is about 33669.2940377431. The cubic root of 1133621361 is about 1042.6919171196.

Adding to 1133621361 its reverse (1631263311), we get a palindrome (2764884672).

The spelling of 1133621361 in words is "one billion, one hundred thirty-three million, six hundred twenty-one thousand, three hundred sixty-one".