38663845 has 16 divisors (see below), whose sum is σ = 51694848. Its totient is φ = 27519040.

The previous prime is 38663843. The next prime is 38663957. The reversal of 38663845 is 54836683.

It is not a de Polignac number, because 38663845 - 2¹ = 38663843 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 (38663843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4894 + ... + 10063.

It is an arithmetic number, because the mean of its divisors is an integer number (3230928).

Almost surely, 2^38663845 is an apocalyptic number.

It is an amenable number.

38663845 is a deficient number, since it is larger than the sum of its proper divisors (13031003).

38663845 is a wasteful number, since it uses less digits than its factorization.

38663845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15020.

The product of its digits is 414720, while the sum is 43.

The square root of 38663845 is about 6218.0258121047. The cubic root of 38663845 is about 338.1439958099.

It can be divided in two parts, 386638 and 45, that added together give a palindrome (386683).

The spelling of 38663845 in words is "thirty-eight million, six hundred sixty-three thousand, eight hundred forty-five".