3855241913 has 4 divisors (see below), whose sum is σ = 3864145908. Its totient is φ = 3846337920.

The previous prime is 3855241903. The next prime is 3855241921. The reversal of 3855241913 is 3191425583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1515778489 + 2339463424 = 38933^2 + 48368^2 .

It is a cyclic number.

It is not a de Polignac number, because 3855241913 - 2¹² = 3855237817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3855241903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4451348 + ... + 4452213.

It is an arithmetic number, because the mean of its divisors is an integer number (966036477).

Almost surely, 2^3855241913 is an apocalyptic number.

It is an amenable number.

3855241913 is a deficient number, since it is larger than the sum of its proper divisors (8903995).

3855241913 is an equidigital number, since it uses as much as digits as its factorization.

3855241913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8903994.

The product of its digits is 129600, while the sum is 41.

The square root of 3855241913 is about 62090.5944004404. The cubic root of 3855241913 is about 1568.0161987309.

The spelling of 3855241913 in words is "three billion, eight hundred fifty-five million, two hundred forty-one thousand, nine hundred thirteen".