38749138 has 8 divisors (see below), whose sum is σ = 59694732. Its totient is φ = 18850896.

The previous prime is 38749111. The next prime is 38749147. The reversal of 38749138 is 83194783.

It is a happy number.

38749138 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 2 ways, for example, as 38725729 + 23409 = 6223^2 + 153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 38749094 and 38749103.

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, 261745 + ... + 261892.

Almost surely, 2^38749138 is an apocalyptic number.

38749138 is a deficient number, since it is larger than the sum of its proper divisors (20945594).

38749138 is a wasteful number, since it uses less digits than its factorization.

38749138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523676.

The product of its digits is 145152, while the sum is 43.

The square root of 38749138 is about 6224.8805611032. The cubic root of 38749138 is about 338.3924633698.

The spelling of 38749138 in words is "thirty-eight million, seven hundred forty-nine thousand, one hundred thirty-eight".