1165635087 has 16 divisors (see below), whose sum is σ = 1597364352. Its totient is φ = 755529120.

The previous prime is 1165635059. The next prime is 1165635089. The reversal of 1165635087 is 7805365611.

1165635087 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1165635087 - 2⁷ = 1165634959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165635089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190912 + ... + 196922.

It is an arithmetic number, because the mean of its divisors is an integer number (99835272).

Almost surely, 2^1165635087 is an apocalyptic number.

1165635087 is a deficient number, since it is larger than the sum of its proper divisors (431729265).

1165635087 is a wasteful number, since it uses less digits than its factorization.

1165635087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7798.

The product of its (nonzero) digits is 151200, while the sum is 42.

The square root of 1165635087 is about 34141.3984335733. The cubic root of 1165635087 is about 1052.4162305842.

The spelling of 1165635087 in words is "one billion, one hundred sixty-five million, six hundred thirty-five thousand, eighty-seven".