36844407409 has 4 divisors (see below), whose sum is σ = 37288316016. Its totient is φ = 36400498804.

The previous prime is 36844407389. The next prime is 36844407493. The reversal of 36844407409 is 90470444863.

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.

It is a cyclic number.

It is not a de Polignac number, because 36844407409 - 2¹¹ = 36844405361 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36844407109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221954179 + ... + 221954344.

It is an arithmetic number, because the mean of its divisors is an integer number (9322079004).

Almost surely, 2^36844407409 is an apocalyptic number.

It is an amenable number.

36844407409 is a deficient number, since it is larger than the sum of its proper divisors (443908607).

36844407409 is an equidigital number, since it uses as much as digits as its factorization.

36844407409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443908606.

The product of its (nonzero) digits is 2322432, while the sum is 49.

The spelling of 36844407409 in words is "thirty-six billion, eight hundred forty-four million, four hundred seven thousand, four hundred nine".