38398686816 has 96 divisors (see below), whose sum is σ = 115655516928. Its totient is φ = 10927296000.

The previous prime is 38398686779. The next prime is 38398686853. The reversal of 38398686816 is 61868689383.

It is a happy number.

38398686816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (38398686779) and next prime (38398686853).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

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, 54846 + ... + 282498.

It is an arithmetic number, because the mean of its divisors is an integer number (1204744968).

Almost surely, 2^38398686816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38398686816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57827758464).

38398686816 is an abundant number, since it is smaller than the sum of its proper divisors (77256830112).

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

38398686816 is a wasteful number, since it uses less digits than its factorization.

38398686816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227924 (or 227916 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 66.

The spelling of 38398686816 in words is "thirty-eight billion, three hundred ninety-eight million, six hundred eighty-six thousand, eight hundred sixteen".