38118138 has 16 divisors (see below), whose sum is σ = 76742976. Its totient is φ = 12621600.

The previous prime is 38118089. The next prime is 38118139. The reversal of 38118138 is 83181183.

38118138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 38118099 and 38118108.

It is not an unprimeable number, because it can be changed into a prime (38118139) 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, 20131 + ... + 21942.

It is an arithmetic number, because the mean of its divisors is an integer number (4796436).

Almost surely, 2^38118138 is an apocalyptic number.

38118138 is an abundant number, since it is smaller than the sum of its proper divisors (38624838).

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

38118138 is a wasteful number, since it uses less digits than its factorization.

38118138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42229.

The product of its digits is 4608, while the sum is 33.

The square root of 38118138 is about 6173.9888240910. The cubic root of 38118138 is about 336.5455811765.

The spelling of 38118138 in words is "thirty-eight million, one hundred eighteen thousand, one hundred thirty-eight".