3861351005 has 4 divisors (see below), whose sum is σ = 4633621212. Its totient is φ = 3089080800.

The previous prime is 3861350971. The next prime is 3861351031. The reversal of 3861351005 is 5001531683.

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 1418124964 + 2443226041 = 37658^2 + 49429^2 .

It is not a de Polignac number, because 3861351005 - 2²⁰ = 3860302429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 386135096 + ... + 386135105.

It is an arithmetic number, because the mean of its divisors is an integer number (1158405303).

Almost surely, 2^3861351005 is an apocalyptic number.

It is an amenable number.

3861351005 is a deficient number, since it is larger than the sum of its proper divisors (772270207).

3861351005 is an equidigital number, since it uses as much as digits as its factorization.

3861351005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772270206.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 3861351005 is about 62139.7699142828. The cubic root of 3861351005 is about 1568.8439980501.

Adding to 3861351005 its reverse (5001531683), we get a palindrome (8862882688).

The spelling of 3861351005 in words is "three billion, eight hundred sixty-one million, three hundred fifty-one thousand, five".