3861530557 has 2 divisors, whose sum is σ = 3861530558. Its totient is φ = 3861530556.

The previous prime is 3861530539. The next prime is 3861530573. The reversal of 3861530557 is 7550351683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3854671396 + 6859161 = 62086^2 + 2619^2 .

It is a cyclic number.

It is not a de Polignac number, because 3861530557 - 2¹¹ = 3861528509 is a prime.

It is a super-2 number, since 2×3861530557² = 29822836485289460498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3861530537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930765278 + 1930765279.

It is an arithmetic number, because the mean of its divisors is an integer number (1930765279).

Almost surely, 2^3861530557 is an apocalyptic number.

It is an amenable number.

3861530557 is a deficient number, since it is larger than the sum of its proper divisors (1).

3861530557 is an equidigital number, since it uses as much as digits as its factorization.

3861530557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378000, while the sum is 43.

The square root of 3861530557 is about 62141.2146405266. The cubic root of 3861530557 is about 1568.8683146439.

The spelling of 3861530557 in words is "three billion, eight hundred sixty-one million, five hundred thirty thousand, five hundred fifty-seven".