38539138 has 16 divisors (see below), whose sum is σ = 65099520. Its totient is φ = 16952400.

The previous prime is 38539133. The next prime is 38539147. The reversal of 38539138 is 83193583.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 38539138.

It is not an unprimeable number, because it can be changed into a prime (38539133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27573 + ... + 28936.

It is an arithmetic number, because the mean of its divisors is an integer number (4068720).

Almost surely, 2^38539138 is an apocalyptic number.

38539138 is a deficient number, since it is larger than the sum of its proper divisors (26560382).

38539138 is a wasteful number, since it uses less digits than its factorization.

38539138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56553.

The product of its digits is 77760, while the sum is 40.

The square root of 38539138 is about 6207.9898517958. The cubic root of 38539138 is about 337.7800525089.

The spelling of 38539138 in words is "thirty-eight million, five hundred thirty-nine thousand, one hundred thirty-eight".