3841647864 has 128 divisors (see below), whose sum is σ = 10610265600. Its totient is φ = 1154926080.

The previous prime is 3841647839. The next prime is 3841647881. The reversal of 3841647864 is 4687461483.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 685554 + ... + 691134.

It is an arithmetic number, because the mean of its divisors is an integer number (82892700).

Almost surely, 2^3841647864 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 3841647864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5305132800).

3841647864 is an abundant number, since it is smaller than the sum of its proper divisors (6768617736).

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

3841647864 is a wasteful number, since it uses less digits than its factorization.

3841647864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5685 (or 5681 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 51.

The square root of 3841647864 is about 61981.0282586535. The cubic root of 3841647864 is about 1566.1710233728.

The spelling of 3841647864 in words is "three billion, eight hundred forty-one million, six hundred forty-seven thousand, eight hundred sixty-four".