1133643621 has 8 divisors (see below), whose sum is σ = 1648936224. Its totient is φ = 687056720.

The previous prime is 1133643617. The next prime is 1133643649. The reversal of 1133643621 is 1263463311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1133643621 - 2² = 1133643617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133643421) 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, 17176386 + ... + 17176451.

It is an arithmetic number, because the mean of its divisors is an integer number (206117028).

Almost surely, 2^1133643621 is an apocalyptic number.

1133643621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1133643621 is a deficient number, since it is larger than the sum of its proper divisors (515292603).

1133643621 is a wasteful number, since it uses less digits than its factorization.

1133643621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34352851.

The product of its digits is 7776, while the sum is 30.

The square root of 1133643621 is about 33669.6246043819. The cubic root of 1133643621 is about 1042.6987419058.

The spelling of 1133643621 in words is "one billion, one hundred thirty-three million, six hundred forty-three thousand, six hundred twenty-one".