1091264039 has 2 divisors, whose sum is σ = 1091264040. Its totient is φ = 1091264038.

The previous prime is 1091264021. The next prime is 1091264071. The reversal of 1091264039 is 9304621901.

It is a weak prime.

It is an emirp because it is prime and its reverse (9304621901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1091264039 - 2⁸ = 1091263783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091266039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545632019 + 545632020.

It is an arithmetic number, because the mean of its divisors is an integer number (545632020).

Almost surely, 2^1091264039 is an apocalyptic number.

1091264039 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091264039 is an equidigital number, since it uses as much as digits as its factorization.

1091264039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1091264039 is about 33034.2858103516. The cubic root of 1091264039 is about 1029.5401343624.

The spelling of 1091264039 in words is "one billion, ninety-one million, two hundred sixty-four thousand, thirty-nine".