38081538 has 48 divisors (see below), whose sum is σ = 92225952. Its totient is φ = 11256000.

The previous prime is 38081509. The next prime is 38081539. The reversal of 38081538 is 83518083.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (38081539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5773 + ... + 10463.

It is an arithmetic number, because the mean of its divisors is an integer number (1921374).

Almost surely, 2^38081538 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38081538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46112976).

38081538 is an abundant number, since it is smaller than the sum of its proper divisors (54144414).

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

38081538 is a wasteful number, since it uses less digits than its factorization.

38081538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4751 (or 4748 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 38081538 is about 6171.0240641242. The cubic root of 38081538 is about 336.4378327104.

It can be divided in two parts, 380 and 81538, that added together give a palindrome (81918).

The spelling of 38081538 in words is "thirty-eight million, eighty-one thousand, five hundred thirty-eight".