3878834512 has 120 divisors (see below), whose sum is σ = 9389131200. Its totient is φ = 1542159360.

The previous prime is 3878834501. The next prime is 3878834537. The reversal of 3878834512 is 2154388783.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 944239 + ... + 948337.

It is an arithmetic number, because the mean of its divisors is an integer number (78242760).

Almost surely, 2^3878834512 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 3878834512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4694565600).

3878834512 is an abundant number, since it is smaller than the sum of its proper divisors (5510296688).

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

3878834512 is a wasteful number, since it uses less digits than its factorization.

3878834512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4209 (or 4196 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 3878834512 is about 62280.2899158313. The cubic root of 3878834512 is about 1571.2082483774.

The spelling of 3878834512 in words is "three billion, eight hundred seventy-eight million, eight hundred thirty-four thousand, five hundred twelve".