1940444563 has 2 divisors, whose sum is σ = 1940444564. Its totient is φ = 1940444562.

The previous prime is 1940444509. The next prime is 1940444567. The reversal of 1940444563 is 3654440491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1940444563 - 2²⁵ = 1906890131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1940444567) 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, 970222281 + 970222282.

It is an arithmetic number, because the mean of its divisors is an integer number (970222282).

Almost surely, 2^1940444563 is an apocalyptic number.

1940444563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940444563 is an equidigital number, since it uses as much as digits as its factorization.

1940444563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 1940444563 is about 44050.4774434966. The cubic root of 1940444563 is about 1247.2889645870.

The spelling of 1940444563 in words is "one billion, nine hundred forty million, four hundred forty-four thousand, five hundred sixty-three".