3871485461 has 2 divisors, whose sum is σ = 3871485462. Its totient is φ = 3871485460.

The previous prime is 3871485427. The next prime is 3871485469. The reversal of 3871485461 is 1645841783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2713784836 + 1157700625 = 52094^2 + 34025^2 .

It is an emirp because it is prime and its reverse (1645841783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3871485461 - 2¹⁰ = 3871484437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3871485469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935742730 + 1935742731.

It is an arithmetic number, because the mean of its divisors is an integer number (1935742731).

Almost surely, 2^3871485461 is an apocalyptic number.

It is an amenable number.

3871485461 is a deficient number, since it is larger than the sum of its proper divisors (1).

3871485461 is an equidigital number, since it uses as much as digits as its factorization.

3871485461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 645120, while the sum is 47.

The square root of 3871485461 is about 62221.2621295968. The cubic root of 3871485461 is about 1570.2153221385.

The spelling of 3871485461 in words is "three billion, eight hundred seventy-one million, four hundred eighty-five thousand, four hundred sixty-one".