1165461065 has 4 divisors (see below), whose sum is σ = 1398553284. Its totient is φ = 932368848.

The previous prime is 1165461053. The next prime is 1165461079. The reversal of 1165461065 is 5601645611.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 372644416 + 792816649 = 19304^2 + 28157^2 .

It is a cyclic number.

It is not a de Polignac number, because 1165461065 - 2¹⁴ = 1165444681 is a prime.

It is a Duffinian number.

It is a Curzon 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, 116546102 + ... + 116546111.

It is an arithmetic number, because the mean of its divisors is an integer number (349638321).

Almost surely, 2^1165461065 is an apocalyptic number.

It is an amenable number.

1165461065 is a deficient number, since it is larger than the sum of its proper divisors (233092219).

1165461065 is an equidigital number, since it uses as much as digits as its factorization.

1165461065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233092218.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1165461065 is about 34138.8497902317. The cubic root of 1165461065 is about 1052.3638549325.

The spelling of 1165461065 in words is "one billion, one hundred sixty-five million, four hundred sixty-one thousand, sixty-five".