3861225786 has 64 divisors (see below), whose sum is σ = 8858336256. Its totient is φ = 1110595200.

The previous prime is 3861225779. The next prime is 3861225803. The reversal of 3861225786 is 6875221683.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189150 + ... + 208566.

It is an arithmetic number, because the mean of its divisors is an integer number (138411504).

Almost surely, 2^3861225786 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3861225786, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4429168128).

3861225786 is an abundant number, since it is smaller than the sum of its proper divisors (4997110470).

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

3861225786 is a wasteful number, since it uses less digits than its factorization.

3861225786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19587.

The product of its digits is 967680, while the sum is 48.

The square root of 3861225786 is about 62138.7623468637. The cubic root of 3861225786 is about 1568.8270392879.

The spelling of 3861225786 in words is "three billion, eight hundred sixty-one million, two hundred twenty-five thousand, seven hundred eighty-six".