1133945621 has 8 divisors (see below), whose sum is σ = 1180886784. Its totient is φ = 1087652160.

The previous prime is 1133945599. The next prime is 1133945671. The reversal of 1133945621 is 1265493311.

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 1133945621 - 2⁶ = 1133945557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133945671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158351 + ... + 165356.

It is an arithmetic number, because the mean of its divisors is an integer number (147610848).

Almost surely, 2^1133945621 is an apocalyptic number.

It is an amenable number.

1133945621 is a deficient number, since it is larger than the sum of its proper divisors (46941163).

1133945621 is a wasteful number, since it uses less digits than its factorization.

1133945621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323851.

The product of its digits is 19440, while the sum is 35.

The square root of 1133945621 is about 33674.1090602261. The cubic root of 1133945621 is about 1042.7913245176.

The spelling of 1133945621 in words is "one billion, one hundred thirty-three million, nine hundred forty-five thousand, six hundred twenty-one".