1944093887 has 2 divisors, whose sum is σ = 1944093888. Its totient is φ = 1944093886.

The previous prime is 1944093881. The next prime is 1944093911. The reversal of 1944093887 is 7883904491.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1944093887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1944093881) 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, 972046943 + 972046944.

It is an arithmetic number, because the mean of its divisors is an integer number (972046944).

Almost surely, 2^1944093887 is an apocalyptic number.

1944093887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1944093887 is an equidigital number, since it uses as much as digits as its factorization.

1944093887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 1944093887 is about 44091.8800574437. The cubic root of 1944093887 is about 1248.0703853626.

The spelling of 1944093887 in words is "one billion, nine hundred forty-four million, ninety-three thousand, eight hundred eighty-seven".