38818281 has 8 divisors (see below), whose sum is σ = 51815104. Its totient is φ = 25850160.

The previous prime is 38818271. The next prime is 38818301. The reversal of 38818281 is 18281883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38818281 - 2⁵ = 38818249 is a prime.

It is a super-2 number, since 2×38818281² = 3013717879589922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38818201) 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, 3790 + ... + 9591.

It is an arithmetic number, because the mean of its divisors is an integer number (6476888).

Almost surely, 2^38818281 is an apocalyptic number.

It is an amenable number.

38818281 is a deficient number, since it is larger than the sum of its proper divisors (12996823).

38818281 is a wasteful number, since it uses less digits than its factorization.

38818281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14351.

The product of its digits is 24576, while the sum is 39.

The square root of 38818281 is about 6230.4318469910. The cubic root of 38818281 is about 338.5936168101.

The spelling of 38818281 in words is "thirty-eight million, eight hundred eighteen thousand, two hundred eighty-one".