2111809033 has 2 divisors, whose sum is σ = 2111809034. Its totient is φ = 2111809032.

The previous prime is 2111809027. The next prime is 2111809057. The reversal of 2111809033 is 3309081112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1843242489 + 268566544 = 42933^2 + 16388^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111809033 - 2¹³ = 2111800841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111808992 and 2111809010.

It is not a weakly prime, because it can be changed into another prime (2111809933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055904516 + 1055904517.

It is an arithmetic number, because the mean of its divisors is an integer number (1055904517).

Almost surely, 2^2111809033 is an apocalyptic number.

It is an amenable number.

2111809033 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111809033 is an equidigital number, since it uses as much as digits as its factorization.

2111809033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 2111809033 is about 45954.4234323531. The cubic root of 2111809033 is about 1282.9750608070.

The spelling of 2111809033 in words is "two billion, one hundred eleven million, eight hundred nine thousand, thirty-three".