38918715 has 16 divisors (see below), whose sum is σ = 67931136. Its totient is φ = 18869600.

The previous prime is 38918683. The next prime is 38918723. The reversal of 38918715 is 51781983.

It is not a de Polignac number, because 38918715 - 2⁵ = 38918683 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117771 + ... + 118100.

It is an arithmetic number, because the mean of its divisors is an integer number (4245696).

Almost surely, 2^38918715 is an apocalyptic number.

38918715 is a deficient number, since it is larger than the sum of its proper divisors (29012421).

38918715 is a wasteful number, since it uses less digits than its factorization.

38918715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235890.

The product of its digits is 60480, while the sum is 42.

The square root of 38918715 is about 6238.4865953210. The cubic root of 38918715 is about 338.8853781873.

The spelling of 38918715 in words is "thirty-eight million, nine hundred eighteen thousand, seven hundred fifteen".