1163365405 has 4 divisors (see below), whose sum is σ = 1396038492. Its totient is φ = 930692320.

The previous prime is 1163365391. The next prime is 1163365409. The reversal of 1163365405 is 5045633611.

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 441798361 + 721567044 = 21019^2 + 26862^2 .

It is not a de Polignac number, because 1163365405 - 2¹⁵ = 1163332637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163365409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116336536 + ... + 116336545.

It is an arithmetic number, because the mean of its divisors is an integer number (349009623).

Almost surely, 2^1163365405 is an apocalyptic number.

It is an amenable number.

1163365405 is a deficient number, since it is larger than the sum of its proper divisors (232673087).

1163365405 is an equidigital number, since it uses as much as digits as its factorization.

1163365405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232673086.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 1163365405 is about 34108.1427961125. The cubic root of 1163365405 is about 1051.7327112893.

The spelling of 1163365405 in words is "one billion, one hundred sixty-three million, three hundred sixty-five thousand, four hundred five".