4138894536 has 96 divisors (see below), whose sum is σ = 11903432640. Its totient is φ = 1174781952.

The previous prime is 4138894531. The next prime is 4138894541. The reversal of 4138894536 is 6354988314.

It is an interprime number because it is at equal distance from previous prime (4138894531) and next prime (4138894541).

It is not an unprimeable number, because it can be changed into a prime (4138894531) 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, 11096046 + ... + 11096418.

It is an arithmetic number, because the mean of its divisors is an integer number (123994090).

Almost surely, 2^4138894536 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 4138894536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5951716320).

4138894536 is an abundant number, since it is smaller than the sum of its proper divisors (7764538104).

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

4138894536 is a wasteful number, since it uses less digits than its factorization.

4138894536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903 (or 642 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 4138894536 is about 64334.2407742564. The cubic root of 4138894536 is about 1605.5658419679.

The spelling of 4138894536 in words is "four billion, one hundred thirty-eight million, eight hundred ninety-four thousand, five hundred thirty-six".