4038994368 has 168 divisors, whose sum is σ = 12712884912. Its totient is φ = 1267052544.

The previous prime is 4038994367. The next prime is 4038994439. The reversal of 4038994368 is 8634998304.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4038994367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256746 + ... + 272022.

It is an arithmetic number, because the mean of its divisors is an integer number (75671934).

Almost surely, 2^4038994368 is an apocalyptic number.

4038994368 is a gapful number since it is divisible by the number (48) 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 4038994368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6356442456).

4038994368 is an abundant number, since it is smaller than the sum of its proper divisors (8673890544).

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

4038994368 is a wasteful number, since it uses less digits than its factorization.

4038994368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15321 (or 15299 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The square root of 4038994368 is about 63553.0830723420. The cubic root of 4038994368 is about 1592.5426884812.

The spelling of 4038994368 in words is "four billion, thirty-eight million, nine hundred ninety-four thousand, three hundred sixty-eight".