1165104641 has 4 divisors (see below), whose sum is σ = 1165805232. Its totient is φ = 1164404052.

The previous prime is 1165104631. The next prime is 1165104679. The reversal of 1165104641 is 1464015611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1464015611 = 1097 ⋅1334563.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1165104641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1165104631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 347795 + ... + 351128.

It is an arithmetic number, because the mean of its divisors is an integer number (291451308).

Almost surely, 2^1165104641 is an apocalyptic number.

It is an amenable number.

1165104641 is a deficient number, since it is larger than the sum of its proper divisors (700591).

1165104641 is an equidigital number, since it uses as much as digits as its factorization.

1165104641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700590.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1165104641 is about 34133.6291800330. The cubic root of 1165104641 is about 1052.2565652114.

The spelling of 1165104641 in words is "one billion, one hundred sixty-five million, one hundred four thousand, six hundred forty-one".