1133581399 has 8 divisors (see below), whose sum is σ = 1138578480. Its totient is φ = 1128595776.

The previous prime is 1133581387. The next prime is 1133581417. The reversal of 1133581399 is 9931853311.

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 1133581399 - 2¹⁹ = 1133057111 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 (1133581499) 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, 237652 + ... + 242374.

It is an arithmetic number, because the mean of its divisors is an integer number (142322310).

Almost surely, 2^1133581399 is an apocalyptic number.

1133581399 is a deficient number, since it is larger than the sum of its proper divisors (4997081).

1133581399 is an equidigital number, since it uses as much as digits as its factorization.

1133581399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5729.

The product of its digits is 87480, while the sum is 43.

The square root of 1133581399 is about 33668.7005837766. The cubic root of 1133581399 is about 1042.6796647793.

The spelling of 1133581399 in words is "one billion, one hundred thirty-three million, five hundred eighty-one thousand, three hundred ninety-nine".