1096387865 has 4 divisors (see below), whose sum is σ = 1315665444. Its totient is φ = 877110288.

The previous prime is 1096387849. The next prime is 1096387871. The reversal of 1096387865 is 5687836901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5687836901 = 461 ⋅12338041.

It can be written as a sum of positive squares in 2 ways, for example, as 357852889 + 738534976 = 18917^2 + 27176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1096387865 - 2⁴ = 1096387849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 109638782 + ... + 109638791.

It is an arithmetic number, because the mean of its divisors is an integer number (328916361).

Almost surely, 2^1096387865 is an apocalyptic number.

It is an amenable number.

1096387865 is a deficient number, since it is larger than the sum of its proper divisors (219277579).

1096387865 is an equidigital number, since it uses as much as digits as its factorization.

1096387865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219277578.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 1096387865 is about 33111.7481417095. The cubic root of 1096387865 is about 1031.1489566625.

The spelling of 1096387865 in words is "one billion, ninety-six million, three hundred eighty-seven thousand, eight hundred sixty-five".