1135805855 has 4 divisors (see below), whose sum is σ = 1362967032. Its totient is φ = 908644680.

The previous prime is 1135805837. The next prime is 1135805861. The reversal of 1135805855 is 5585085311.

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: 5585085311 = 13 ⋅429621947.

It is not a de Polignac number, because 1135805855 - 2⁸ = 1135805599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113580581 + ... + 113580590.

It is an arithmetic number, because the mean of its divisors is an integer number (340741758).

Almost surely, 2^1135805855 is an apocalyptic number.

1135805855 is a deficient number, since it is larger than the sum of its proper divisors (227161177).

1135805855 is an equidigital number, since it uses as much as digits as its factorization.

1135805855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227161176.

The product of its (nonzero) digits is 120000, while the sum is 41.

The square root of 1135805855 is about 33701.7188730783. The cubic root of 1135805855 is about 1043.3612448741.

The spelling of 1135805855 in words is "one billion, one hundred thirty-five million, eight hundred five thousand, eight hundred fifty-five".