38648815 has 4 divisors (see below), whose sum is σ = 46378584. Its totient is φ = 30919048.

The previous prime is 38648791. The next prime is 38648821. The reversal of 38648815 is 51884683.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38648815 - 2¹¹ = 38646767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3864877 + ... + 3864886.

It is an arithmetic number, because the mean of its divisors is an integer number (11594646).

Almost surely, 2^38648815 is an apocalyptic number.

38648815 is a deficient number, since it is larger than the sum of its proper divisors (7729769).

38648815 is an equidigital number, since it uses as much as digits as its factorization.

38648815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729768.

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

The square root of 38648815 is about 6216.8171116738. The cubic root of 38648815 is about 338.1001739659.

The spelling of 38648815 in words is "thirty-eight million, six hundred forty-eight thousand, eight hundred fifteen".