2133111949 has 2 divisors, whose sum is σ = 2133111950. Its totient is φ = 2133111948.

The previous prime is 2133111947. The next prime is 2133112013. The reversal of 2133111949 is 9491113312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1800304900 + 332807049 = 42430^2 + 18243^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133111949 - 2¹ = 2133111947 is a prime.

Together with 2133111947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133111947) 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 as a sum of consecutive naturals, namely, 1066555974 + 1066555975.

It is an arithmetic number, because the mean of its divisors is an integer number (1066555975).

Almost surely, 2^2133111949 is an apocalyptic number.

It is an amenable number.

2133111949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133111949 is an equidigital number, since it uses as much as digits as its factorization.

2133111949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 34.

The square root of 2133111949 is about 46185.6249172835. The cubic root of 2133111949 is about 1287.2746478871.

The spelling of 2133111949 in words is "two billion, one hundred thirty-three million, one hundred eleven thousand, nine hundred forty-nine".