3921151712 has 48 divisors (see below), whose sum is σ = 8006266800. Its totient is φ = 1888158720.

The previous prime is 3921151697. The next prime is 3921151747. The reversal of 3921151712 is 2171511293.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374387 + ... + 384717.

It is an arithmetic number, because the mean of its divisors is an integer number (166797225).

Almost surely, 2^3921151712 is an apocalyptic number.

3921151712 is a gapful number since it is divisible by the number (32) 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 3921151712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4003133400).

3921151712 is an abundant number, since it is smaller than the sum of its proper divisors (4085115088).

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

3921151712 is a wasteful number, since it uses less digits than its factorization.

3921151712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10779 (or 10771 counting only the distinct ones).

The product of its digits is 3780, while the sum is 32.

The square root of 3921151712 is about 62619.1002171063. The cubic root of 3921151712 is about 1576.9014357386.

The spelling of 3921151712 in words is "three billion, nine hundred twenty-one million, one hundred fifty-one thousand, seven hundred twelve".