1165840338805 has 8 divisors (see below), whose sum is σ = 1413431174232. Its totient is φ = 923057092608.

The previous prime is 1165840338709. The next prime is 1165840338851. The reversal of 1165840338805 is 5088330485611.

It can be written as a sum of positive squares in 4 ways, for example, as 465944125201 + 699896213604 = 682601^2 + 836598^2 .

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 1165840338805 - 2²⁷ = 1165706121077 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 7 ways as a sum of consecutive naturals, for example, 1201896772 + ... + 1201897741.

It is an arithmetic number, because the mean of its divisors is an integer number (176678896779).

Almost surely, 2^{1165840338805} is an apocalyptic number.

It is an amenable number.

1165840338805 is a deficient number, since it is larger than the sum of its proper divisors (247590835427).

1165840338805 is an equidigital number, since it uses as much as digits as its factorization.

1165840338805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403794615.

The product of its (nonzero) digits is 2764800, while the sum is 52.

The spelling of 1165840338805 in words is "one trillion, one hundred sixty-five billion, eight hundred forty million, three hundred thirty-eight thousand, eight hundred five".