38081894400 has 648 divisors, whose sum is σ = 150129727020. Its totient is φ = 9218457600.

The previous prime is 38081894387. The next prime is 38081894401. The reversal of 38081894400 is 449818083.

38081894400 is a `hidden beast` number, since 3 + 80 + 81 + 8 + 94 + 400 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38081894401) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 55756459 + ... + 55757141.

Almost surely, 2^38081894400 is an apocalyptic number.

38081894400 is a gapful number since it is divisible by the number (30) 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 38081894400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75064863510).

38081894400 is an abundant number, since it is smaller than the sum of its proper divisors (112047832620).

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

38081894400 is a wasteful number, since it uses less digits than its factorization.

38081894400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 704 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 38081894400 in words is "thirty-eight billion, eighty-one million, eight hundred ninety-four thousand, four hundred".