1044541991 has 2 divisors, whose sum is σ = 1044541992. Its totient is φ = 1044541990.

The previous prime is 1044541961. The next prime is 1044541997. The reversal of 1044541991 is 1991454401.

1044541991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1044541991 - 2¹⁴ = 1044525607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1044541997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522270995 + 522270996.

It is an arithmetic number, because the mean of its divisors is an integer number (522270996).

Almost surely, 2^1044541991 is an apocalyptic number.

1044541991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1044541991 is an equidigital number, since it uses as much as digits as its factorization.

1044541991 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 1044541991 is about 32319.3748547214. The cubic root of 1044541991 is about 1014.6321852342.

The spelling of 1044541991 in words is "one billion, forty-four million, five hundred forty-one thousand, nine hundred ninety-one".