3878908992 has 336 divisors, whose sum is σ = 13500445440. Its totient is φ = 1088640000.

The previous prime is 3878908981. The next prime is 3878908997. The reversal of 3878908992 is 2998098783.

3878908992 is a `hidden beast` number, since 387 + 8 + 90 + 89 + 92 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (3878908997) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5164617 + ... + 5165367.

Almost surely, 2^3878908992 is an apocalyptic number.

3878908992 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 3878908992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6750222720).

3878908992 is an abundant number, since it is smaller than the sum of its proper divisors (9621536448).

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

3878908992 is a wasteful number, since it uses less digits than its factorization.

3878908992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The square root of 3878908992 is about 62280.8878549431. The cubic root of 3878908992 is about 1571.2183049069.

The spelling of 3878908992 in words is "three billion, eight hundred seventy-eight million, nine hundred eight thousand, nine hundred ninety-two".