3913238868 has 96 divisors (see below), whose sum is σ = 11405442048. Its totient is φ = 1014508800.

The previous prime is 3913238827. The next prime is 3913238869. The reversal of 3913238868 is 8688323193.

It is a self number, because there is not a number n which added to its sum of digits gives 3913238868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3913238869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 523896 + ... + 531312.

It is an arithmetic number, because the mean of its divisors is an integer number (118806688).

Almost surely, 2^3913238868 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 3913238868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5702721024).

3913238868 is an abundant number, since it is smaller than the sum of its proper divisors (7492203180).

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

3913238868 is a wasteful number, since it uses less digits than its factorization.

3913238868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8013 (or 8011 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 3913238868 is about 62555.8859580775. The cubic root of 3913238868 is about 1575.8399977781.

The spelling of 3913238868 in words is "three billion, nine hundred thirteen million, two hundred thirty-eight thousand, eight hundred sixty-eight".