3866840802 has 96 divisors (see below), whose sum is σ = 9771350400. Its totient is φ = 1131308640.

The previous prime is 3866840797. The next prime is 3866840819. The reversal of 3866840802 is 2080486683.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 179283 + ... + 199689.

It is an arithmetic number, because the mean of its divisors is an integer number (101784900).

Almost surely, 2^3866840802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3866840802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4885675200).

3866840802 is an abundant number, since it is smaller than the sum of its proper divisors (5904509598).

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

3866840802 is a wasteful number, since it uses less digits than its factorization.

3866840802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20469 (or 20452 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 3866840802 is about 62183.9271998802. The cubic root of 3866840802 is about 1569.5871366278.

The spelling of 3866840802 in words is "three billion, eight hundred sixty-six million, eight hundred forty thousand, eight hundred two".