38516018 has 4 divisors (see below), whose sum is σ = 57774030. Its totient is φ = 19258008.

The previous prime is 38516011. The next prime is 38516029. The reversal of 38516018 is 81061583.

38516018 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 an emirpimes, since its reverse is a distinct semiprime: 81061583 = 29 ⋅2795227.

It can be written as a sum of positive squares in only one way, i.e., 38477209 + 38809 = 6203^2 + 197^2 .

It is not an unprimeable number, because it can be changed into a prime (38516011) 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 as a sum of consecutive naturals, namely, 9629003 + ... + 9629006.

Almost surely, 2^38516018 is an apocalyptic number.

38516018 is a deficient number, since it is larger than the sum of its proper divisors (19258012).

38516018 is a wasteful number, since it uses less digits than its factorization.

38516018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19258011.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 38516018 is about 6206.1274559906. The cubic root of 38516018 is about 337.7124931618.

The spelling of 38516018 in words is "thirty-eight million, five hundred sixteen thousand, eighteen".