38413818 has 64 divisors (see below), whose sum is σ = 90097920. Its totient is φ = 12108096.

The previous prime is 38413789. The next prime is 38413819. The reversal of 38413818 is 81831483.

38413818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (38413819) 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 31 ways as a sum of consecutive naturals, for example, 194896 + ... + 195092.

It is an arithmetic number, because the mean of its divisors is an integer number (1407780).

Almost surely, 2^38413818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38413818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45048960).

38413818 is an abundant number, since it is smaller than the sum of its proper divisors (51684102).

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

38413818 is a wasteful number, since it uses less digits than its factorization.

38413818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 382 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 38413818 is about 6197.8881887301. Note that the first 3 decimals coincide. The cubic root of 38413818 is about 337.4135284641.

The spelling of 38413818 in words is "thirty-eight million, four hundred thirteen thousand, eight hundred eighteen".