38949942528 has 720 divisors, whose sum is σ = 139110846336. Its totient is φ = 10610196480.

The previous prime is 38949942527. The next prime is 38949942533. The reversal of 38949942528 is 82524994983.

38949942528 is a `hidden beast` number, since 3 + 89 + 499 + 42 + 5 + 28 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38949942527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 469276375 + ... + 469276457.

Almost surely, 2^38949942528 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 38949942528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69555423168).

38949942528 is an abundant number, since it is smaller than the sum of its proper divisors (100160903808).

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

38949942528 is an equidigital number, since it uses as much as digits as its factorization.

38949942528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 209 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 38949942528 in words is "thirty-eight billion, nine hundred forty-nine million, nine hundred forty-two thousand, five hundred twenty-eight".