1940454911 has 2 divisors, whose sum is σ = 1940454912. Its totient is φ = 1940454910.

The previous prime is 1940454821. The next prime is 1940454917. The reversal of 1940454911 is 1194540491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1940454911 - 2³⁰ = 866713087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1940454917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970227455 + 970227456.

It is an arithmetic number, because the mean of its divisors is an integer number (970227456).

Almost surely, 2^1940454911 is an apocalyptic number.

1940454911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940454911 is an equidigital number, since it uses as much as digits as its factorization.

1940454911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 1940454911 is about 44050.5948995016. The cubic root of 1940454911 is about 1247.2911817633.

The spelling of 1940454911 in words is "one billion, nine hundred forty million, four hundred fifty-four thousand, nine hundred eleven".