38897736192 has 640 divisors, whose sum is σ = 138591129600. Its totient is φ = 10537648128.

The previous prime is 38897736191. The next prime is 38897736217. The reversal of 38897736192 is 29163779883.

38897736192 is a `hidden beast` number, since 3 + 8 + 8 + 9 + 7 + 7 + 3 + 619 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (38897736191) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 232920493 + ... + 232920659.

It is an arithmetic number, because the mean of its divisors is an integer number (216548640).

Almost surely, 2^38897736192 is an apocalyptic number.

38897736192 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38897736192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69295564800).

38897736192 is an abundant number, since it is smaller than the sum of its proper divisors (99693393408).

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

38897736192 is a wasteful number, since it uses less digits than its factorization.

38897736192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313 (or 291 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The spelling of 38897736192 in words is "thirty-eight billion, eight hundred ninety-seven million, seven hundred thirty-six thousand, one hundred ninety-two".