3843540442015 has 16 divisors (see below), whose sum is σ = 4619086744608. Its totient is φ = 3070274541696.

The previous prime is 3843540442013. The next prime is 3843540442039. The reversal of 3843540442015 is 5102440453483.

It is a cyclic number.

It is not a de Polignac number, because 3843540442015 - 2¹ = 3843540442013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3843540442013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33415032 + ... + 33529858.

It is an arithmetic number, because the mean of its divisors is an integer number (288692921538).

Almost surely, 2^{3843540442015} is an apocalyptic number.

3843540442015 is a deficient number, since it is larger than the sum of its proper divisors (775546302593).

3843540442015 is a wasteful number, since it uses less digits than its factorization.

3843540442015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124698.

The product of its (nonzero) digits is 921600, while the sum is 43.

Adding to 3843540442015 its reverse (5102440453483), we get a palindrome (8945980895498).

The spelling of 3843540442015 in words is "three trillion, eight hundred forty-three billion, five hundred forty million, four hundred forty-two thousand, fifteen".