38538138 has 16 divisors (see below), whose sum is σ = 77182560. Its totient is φ = 12828336.

The previous prime is 38538121. The next prime is 38538139. The reversal of 38538138 is 83183583.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38538096 and 38538105.

It is not an unprimeable number, because it can be changed into a prime (38538139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753 + ... + 8811.

It is an arithmetic number, because the mean of its divisors is an integer number (4823910).

Almost surely, 2^38538138 is an apocalyptic number.

38538138 is an abundant number, since it is smaller than the sum of its proper divisors (38644422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38538138 is a wasteful number, since it uses less digits than its factorization.

38538138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8861.

The product of its digits is 69120, while the sum is 39.

The square root of 38538138 is about 6207.9093099046. The cubic root of 38538138 is about 337.7771309509. Note that the first 3 decimals are identical.

The spelling of 38538138 in words is "thirty-eight million, five hundred thirty-eight thousand, one hundred thirty-eight".