36438385 has 4 divisors (see below), whose sum is σ = 43726068. Its totient is φ = 29150704.

The previous prime is 36438379. The next prime is 36438403. The reversal of 36438385 is 58383463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58383463 = 2237 ⋅26099.

It can be written as a sum of positive squares in 2 ways, for example, as 14470416 + 21967969 = 3804^2 + 4687^2 .

It is a cyclic number.

It is not a de Polignac number, because 36438385 - 2¹⁹ = 35914097 is a prime.

It is a Duffinian 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, 3643834 + ... + 3643843.

It is an arithmetic number, because the mean of its divisors is an integer number (10931517).

Almost surely, 2^36438385 is an apocalyptic number.

It is an amenable number.

36438385 is a deficient number, since it is larger than the sum of its proper divisors (7287683).

36438385 is an equidigital number, since it uses as much as digits as its factorization.

36438385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7287682.

The product of its digits is 207360, while the sum is 40.

The square root of 36438385 is about 6036.4215392896. The cubic root of 36438385 is about 331.5276130079.

The spelling of 36438385 in words is "thirty-six million, four hundred thirty-eight thousand, three hundred eighty-five".