38918816007 has 16 divisors (see below), whose sum is σ = 52103969280. Its totient is φ = 25839827552.

The previous prime is 38918815939. The next prime is 38918816009. The reversal of 38918816007 is 70061881983.

It is a cyclic number.

It is not a de Polignac number, because 38918816007 - 2¹⁰ = 38918814983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38918816009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5013373 + ... + 5021129.

It is an arithmetic number, because the mean of its divisors is an integer number (3256498080).

Almost surely, 2^38918816007 is an apocalyptic number.

38918816007 is a deficient number, since it is larger than the sum of its proper divisors (13185153273).

38918816007 is a wasteful number, since it uses less digits than its factorization.

38918816007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14382.

The product of its (nonzero) digits is 580608, while the sum is 51.

The spelling of 38918816007 in words is "thirty-eight billion, nine hundred eighteen million, eight hundred sixteen thousand, seven".