1084865855 has 8 divisors (see below), whose sum is σ = 1306081392. Its totient is φ = 865064448.

The previous prime is 1084865849. The next prime is 1084865893. The reversal of 1084865855 is 5585684801.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1084865855 - 2⁴ = 1084865839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351842 + ... + 354911.

It is an arithmetic number, because the mean of its divisors is an integer number (163260174).

Almost surely, 2^1084865855 is an apocalyptic number.

1084865855 is a deficient number, since it is larger than the sum of its proper divisors (221215537).

1084865855 is an equidigital number, since it uses as much as digits as its factorization.

1084865855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707065.

The product of its (nonzero) digits is 1536000, while the sum is 50.

The square root of 1084865855 is about 32937.3018779620. The cubic root of 1084865855 is about 1027.5240921569.

The spelling of 1084865855 in words is "one billion, eighty-four million, eight hundred sixty-five thousand, eight hundred fifty-five".