38813457930 has 128 divisors (see below), whose sum is σ = 104507504640. Its totient is φ = 9160750080.

The previous prime is 38813457919. The next prime is 38813457937. The reversal of 38813457930 is 3975431883.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (38813457937) 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, 1303084 + ... + 1332536.

It is an arithmetic number, because the mean of its divisors is an integer number (816464880).

Almost surely, 2^38813457930 is an apocalyptic number.

38813457930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38813457930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52253752320).

38813457930 is an abundant number, since it is smaller than the sum of its proper divisors (65694046710).

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

38813457930 is a wasteful number, since it uses less digits than its factorization.

38813457930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29616.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 38813457930 in words is "thirty-eight billion, eight hundred thirteen million, four hundred fifty-seven thousand, nine hundred thirty".