38918718 has 40 divisors (see below), whose sum is σ = 88339680. Its totient is φ = 12804480.

The previous prime is 38918683. The next prime is 38918723. The reversal of 38918718 is 81781983.

It is a super-2 number, since 2×38918718² = 3029333221527048, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11278 + ... + 14318.

It is an arithmetic number, because the mean of its divisors is an integer number (2208492).

Almost surely, 2^38918718 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38918718, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44169840).

38918718 is an abundant number, since it is smaller than the sum of its proper divisors (49420962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38918718 is a wasteful number, since it uses less digits than its factorization.

38918718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3134 (or 3125 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 38918718 is about 6238.4868357639. The cubic root of 38918718 is about 338.8853868948.

The spelling of 38918718 in words is "thirty-eight million, nine hundred eighteen thousand, seven hundred eighteen".