1133685691 has 4 divisors (see below), whose sum is σ = 1133838432. Its totient is φ = 1133532952.

The previous prime is 1133685689. The next prime is 1133685697. The reversal of 1133685691 is 1965863311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1133685691 - 2¹ = 1133685689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1133685697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64636 + ... + 80281.

It is an arithmetic number, because the mean of its divisors is an integer number (283459608).

Almost surely, 2^1133685691 is an apocalyptic number.

1133685691 is a deficient number, since it is larger than the sum of its proper divisors (152741).

1133685691 is an equidigital number, since it uses as much as digits as its factorization.

1133685691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152740.

The product of its digits is 116640, while the sum is 43.

The square root of 1133685691 is about 33670.2493456761. The cubic root of 1133685691 is about 1042.7116400785.

The spelling of 1133685691 in words is "one billion, one hundred thirty-three million, six hundred eighty-five thousand, six hundred ninety-one".