38818478 has 4 divisors (see below), whose sum is σ = 58227720. Its totient is φ = 19409238.

The previous prime is 38818453. The next prime is 38818487. The reversal of 38818478 is 87481883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87481883 = 829 ⋅105527.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9704618 + ... + 9704621.

It is an arithmetic number, because the mean of its divisors is an integer number (14556930).

Almost surely, 2^38818478 is an apocalyptic number.

38818478 is a deficient number, since it is larger than the sum of its proper divisors (19409242).

38818478 is a wasteful number, since it uses less digits than its factorization.

38818478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19409241.

The product of its digits is 344064, while the sum is 47.

The square root of 38818478 is about 6230.4476564690. The cubic root of 38818478 is about 338.5941895886.

The spelling of 38818478 in words is "thirty-eight million, eight hundred eighteen thousand, four hundred seventy-eight".