3878417736 has 96 divisors (see below), whose sum is σ = 10642053240. Its totient is φ = 1275899904.

The previous prime is 3878417717. The next prime is 3878417749. The reversal of 3878417736 is 6377148783.

It can be written as a sum of positive squares in 4 ways, for example, as 3116988900 + 761428836 = 55830^2 + 27594^2 .

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, 3889590 + ... + 3890586.

Almost surely, 2^3878417736 is an apocalyptic number.

3878417736 is a gapful number since it is divisible by the number (36) 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 3878417736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5321026620).

3878417736 is an abundant number, since it is smaller than the sum of its proper divisors (6763635504).

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

3878417736 is a wasteful number, since it uses less digits than its factorization.

3878417736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1656 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The square root of 3878417736 is about 62276.9438556517. The cubic root of 3878417736 is about 1571.1519715634.

The spelling of 3878417736 in words is "three billion, eight hundred seventy-eight million, four hundred seventeen thousand, seven hundred thirty-six".