38658481 has 4 divisors (see below), whose sum is σ = 38670964. Its totient is φ = 38646000.

The previous prime is 38658463. The next prime is 38658509. The reversal of 38658481 is 18485683.

38658481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18485683 = 3121 ⋅5923.

It can be written as a sum of positive squares in 2 ways, for example, as 25401600 + 13256881 = 5040^2 + 3641^2 .

It is a cyclic number.

It is not a de Polignac number, because 38658481 - 2⁷ = 38658353 is a prime.

It is a super-2 number, since 2×38658481² = 2988956306454722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38658401) 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 3 ways as a sum of consecutive naturals, for example, 2311 + ... + 9091.

It is an arithmetic number, because the mean of its divisors is an integer number (9667741).

Almost surely, 2^38658481 is an apocalyptic number.

It is an amenable number.

38658481 is a deficient number, since it is larger than the sum of its proper divisors (12483).

38658481 is an equidigital number, since it uses as much as digits as its factorization.

38658481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12482.

The product of its digits is 184320, while the sum is 43.

The square root of 38658481 is about 6217.5944705328. The cubic root of 38658481 is about 338.1283577008.

The spelling of 38658481 in words is "thirty-eight million, six hundred fifty-eight thousand, four hundred eighty-one".