3866915052 has 240 divisors, whose sum is σ = 13573900032. Its totient is φ = 927054720.

The previous prime is 3866914999. The next prime is 3866915053. The reversal of 3866915052 is 2505196683.

3866915052 is a `hidden beast` number, since 3 + 86 + 69 + 1 + 505 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 3866914989 and 3866915007.

It is not an unprimeable number, because it can be changed into a prime (3866915053) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 318363 + ... + 330285.

Almost surely, 2^3866915052 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 3866915052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6786950016).

3866915052 is an abundant number, since it is smaller than the sum of its proper divisors (9706984980).

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

3866915052 is a wasteful number, since it uses less digits than its factorization.

3866915052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11970 (or 11959 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 3866915052 is about 62184.5242162389. The cubic root of 3866915052 is about 1569.5971828219.

The spelling of 3866915052 in words is "three billion, eight hundred sixty-six million, nine hundred fifteen thousand, fifty-two".