38189645 has 8 divisors (see below), whose sum is σ = 49352856. Its totient is φ = 28201536.

The previous prime is 38189623. The next prime is 38189647. The reversal of 38189645 is 54698183.

38189645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6086089 + 32103556 = 2467^2 + 5666^2 .

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 38189645 - 2²⁴ = 21412429 is a prime.

It is a super-3 number, since 3×38189645³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38189596 and 38189605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38189647) 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 7 ways as a sum of consecutive naturals, for example, 293702 + ... + 293831.

It is an arithmetic number, because the mean of its divisors is an integer number (6169107).

Almost surely, 2^38189645 is an apocalyptic number.

It is an amenable number.

38189645 is a deficient number, since it is larger than the sum of its proper divisors (11163211).

38189645 is a wasteful number, since it uses less digits than its factorization.

38189645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587551.

The product of its digits is 207360, while the sum is 44.

The square root of 38189645 is about 6179.7770995401. Note that the first 3 decimals coincide. The cubic root of 38189645 is about 336.7558951589.

The spelling of 38189645 in words is "thirty-eight million, one hundred eighty-nine thousand, six hundred forty-five".