2045119691 has 2 divisors, whose sum is σ = 2045119692. Its totient is φ = 2045119690.

The previous prime is 2045119679. The next prime is 2045119709. The reversal of 2045119691 is 1969115402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2045119691 - 2⁶ = 2045119627 is a prime.

It is not a weakly prime, because it can be changed into another prime (2045119291) 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, 1022559845 + 1022559846.

It is an arithmetic number, because the mean of its divisors is an integer number (1022559846).

Almost surely, 2^2045119691 is an apocalyptic number.

2045119691 is a deficient number, since it is larger than the sum of its proper divisors (1).

2045119691 is an equidigital number, since it uses as much as digits as its factorization.

2045119691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 2045119691 is about 45222.9995798598. Note that the first 3 decimals coincide. The cubic root of 2045119691 is about 1269.3252229985.

Adding to 2045119691 its sum of digits (38), we get a square (2045119729 = 45223²).

The spelling of 2045119691 in words is "two billion, forty-five million, one hundred nineteen thousand, six hundred ninety-one".