38218105 has 4 divisors (see below), whose sum is σ = 45861732. Its totient is φ = 30574480.

The previous prime is 38218087. The next prime is 38218127. The reversal of 38218105 is 50181283.

38218105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 22250089 + 15968016 = 4717^2 + 3996^2 .

It is not a de Polignac number, because 38218105 - 2¹⁵ = 38185337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 3821806 + ... + 3821815.

It is an arithmetic number, because the mean of its divisors is an integer number (11465433).

Almost surely, 2^38218105 is an apocalyptic number.

It is an amenable number.

38218105 is a deficient number, since it is larger than the sum of its proper divisors (7643627).

38218105 is an equidigital number, since it uses as much as digits as its factorization.

38218105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7643626.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 38218105 is about 6182.0793427454. The cubic root of 38218105 is about 336.8395277159.

Adding to 38218105 its reverse (50181283), we get a palindrome (88399388).

The spelling of 38218105 in words is "thirty-eight million, two hundred eighteen thousand, one hundred five".