3986181461 has 2 divisors, whose sum is σ = 3986181462. Its totient is φ = 3986181460.

The previous prime is 3986181431. The next prime is 3986181481. The reversal of 3986181461 is 1641816893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2094801361 + 1891380100 = 45769^2 + 43490^2 .

It is a cyclic number.

It is not a de Polignac number, because 3986181461 - 2¹⁴ = 3986165077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3986181401) 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 as a sum of consecutive naturals, namely, 1993090730 + 1993090731.

It is an arithmetic number, because the mean of its divisors is an integer number (1993090731).

Almost surely, 2^3986181461 is an apocalyptic number.

It is an amenable number.

3986181461 is a deficient number, since it is larger than the sum of its proper divisors (1).

3986181461 is an equidigital number, since it uses as much as digits as its factorization.

3986181461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 47.

The square root of 3986181461 is about 63136.2135465851. The cubic root of 3986181461 is about 1585.5709793246.

The spelling of 3986181461 in words is "three billion, nine hundred eighty-six million, one hundred eighty-one thousand, four hundred sixty-one".