2193135811 has 4 divisors (see below), whose sum is σ = 2196153232. Its totient is φ = 2190118392.

The previous prime is 2193135803. The next prime is 2193135839. The reversal of 2193135811 is 1185313912.

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 2193135811 - 2³ = 2193135803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2193135871) 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 3 ways as a sum of consecutive naturals, for example, 1507620 + ... + 1509073.

It is an arithmetic number, because the mean of its divisors is an integer number (549038308).

Almost surely, 2^2193135811 is an apocalyptic number.

2193135811 is a deficient number, since it is larger than the sum of its proper divisors (3017421).

2193135811 is an equidigital number, since it uses as much as digits as its factorization.

2193135811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017420.

The product of its digits is 6480, while the sum is 34.

The square root of 2193135811 is about 46830.9279322970. The cubic root of 2193135811 is about 1299.2373852617.

The spelling of 2193135811 in words is "two billion, one hundred ninety-three million, one hundred thirty-five thousand, eight hundred eleven".