1011441391 has 2 divisors, whose sum is σ = 1011441392. Its totient is φ = 1011441390.

The previous prime is 1011441377. The next prime is 1011441413. The reversal of 1011441391 is 1931441101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1011441391 - 2⁵ = 1011441359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011441331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505720695 + 505720696.

It is an arithmetic number, because the mean of its divisors is an integer number (505720696).

Almost surely, 2^1011441391 is an apocalyptic number.

1011441391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011441391 is an equidigital number, since it uses as much as digits as its factorization.

1011441391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1011441391 is about 31803.1663675176. The cubic root of 1011441391 is about 1003.7993437062.

Adding to 1011441391 its reverse (1931441101), we get a palindrome (2942882492).

The spelling of 1011441391 in words is "one billion, eleven million, four hundred forty-one thousand, three hundred ninety-one".