3843784642 has 8 divisors (see below), whose sum is σ = 5964493500. Its totient is φ = 1855620144.

The previous prime is 3843784631. The next prime is 3843784649. The reversal of 3843784642 is 2464873483.

It can be written as a sum of positive squares in 2 ways, for example, as 3649488921 + 194295721 = 60411^2 + 13939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3843784649) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 33136017 + ... + 33136132.

Almost surely, 2^3843784642 is an apocalyptic number.

3843784642 is a deficient number, since it is larger than the sum of its proper divisors (2120708858).

3843784642 is a wasteful number, since it uses less digits than its factorization.

3843784642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66272180.

The product of its digits is 3096576, while the sum is 49.

The square root of 3843784642 is about 61998.2632176096. The cubic root of 3843784642 is about 1566.4613449248.

The spelling of 3843784642 in words is "three billion, eight hundred forty-three million, seven hundred eighty-four thousand, six hundred forty-two".