3861238541 has 2 divisors, whose sum is σ = 3861238542. Its totient is φ = 3861238540.

The previous prime is 3861238483. The next prime is 3861238583. The reversal of 3861238541 is 1458321683.

3861238541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3052120516 + 809118025 = 55246^2 + 28445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3861238541 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3861231541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930619270 + 1930619271.

It is an arithmetic number, because the mean of its divisors is an integer number (1930619271).

Almost surely, 2^3861238541 is an apocalyptic number.

It is an amenable number.

3861238541 is a deficient number, since it is larger than the sum of its proper divisors (1).

3861238541 is an equidigital number, since it uses as much as digits as its factorization.

3861238541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The square root of 3861238541 is about 62138.8649799785. The cubic root of 3861238541 is about 1568.8287667503.

The spelling of 3861238541 in words is "three billion, eight hundred sixty-one million, two hundred thirty-eight thousand, five hundred forty-one".