3893918756 has 48 divisors (see below), whose sum is σ = 8447349120. Its totient is φ = 1529349120.

The previous prime is 3893918753. The next prime is 3893918761. The reversal of 3893918756 is 6578193983.

It is a junction number, because it is equal to n+sod(n) for n = 3893918695 and 3893918704.

It is not an unprimeable number, because it can be changed into a prime (3893918753) 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 15 ways as a sum of consecutive naturals, for example, 12116 + ... + 89076.

It is an arithmetic number, because the mean of its divisors is an integer number (175986440).

Almost surely, 2^3893918756 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 3893918756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4223674560).

3893918756 is an abundant number, since it is smaller than the sum of its proper divisors (4553430364).

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

3893918756 is a wasteful number, since it uses less digits than its factorization.

3893918756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77124 (or 77122 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 59.

The square root of 3893918756 is about 62401.2720703673. The cubic root of 3893918756 is about 1573.2423501243.

The spelling of 3893918756 in words is "three billion, eight hundred ninety-three million, nine hundred eighteen thousand, seven hundred fifty-six".