38631067398 has 256 divisors, whose sum is σ = 113084743680. Its totient is φ = 9595856160.

The previous prime is 38631067381. The next prime is 38631067483. The reversal of 38631067398 is 89376013683.

38631067398 is a `hidden beast` number, since 386 + 3 + 106 + 73 + 98 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7743861 + ... + 7748847.

It is an arithmetic number, because the mean of its divisors is an integer number (441737280).

Almost surely, 2^38631067398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38631067398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56542371840).

38631067398 is an abundant number, since it is smaller than the sum of its proper divisors (74453676282).

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

38631067398 is a wasteful number, since it uses less digits than its factorization.

38631067398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5051 (or 5033 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 38631067398 in words is "thirty-eight billion, six hundred thirty-one million, sixty-seven thousand, three hundred ninety-eight".