1091309419 has 2 divisors, whose sum is σ = 1091309420. Its totient is φ = 1091309418.

The previous prime is 1091309377. The next prime is 1091309437. The reversal of 1091309419 is 9149031901.

It is a strong prime.

It is an emirp because it is prime and its reverse (9149031901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1091309419 - 2⁷ = 1091309291 is a prime.

It is a super-2 number, since 2×1091309419² = 2381912495996235122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1091309519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545654709 + 545654710.

It is an arithmetic number, because the mean of its divisors is an integer number (545654710).

Almost surely, 2^1091309419 is an apocalyptic number.

1091309419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091309419 is an equidigital number, since it uses as much as digits as its factorization.

1091309419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 1091309419 is about 33034.9726653436. The cubic root of 1091309419 is about 1029.5544052391.

The spelling of 1091309419 in words is "one billion, ninety-one million, three hundred nine thousand, four hundred nineteen".