3877986361 has 2 divisors, whose sum is σ = 3877986362. Its totient is φ = 3877986360.

The previous prime is 3877986311. The next prime is 3877986383. The reversal of 3877986361 is 1636897783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3764436025 + 113550336 = 61355^2 + 10656^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3877986361 is a prime.

It is a super-2 number, since 2×3877986361² = 30077556432204044642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3877986296 and 3877986305.

It is not a weakly prime, because it can be changed into another prime (3877986311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1938993180 + 1938993181.

It is an arithmetic number, because the mean of its divisors is an integer number (1938993181).

Almost surely, 2^3877986361 is an apocalyptic number.

It is an amenable number.

3877986361 is a deficient number, since it is larger than the sum of its proper divisors (1).

3877986361 is an equidigital number, since it uses as much as digits as its factorization.

3877986361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9144576, while the sum is 58.

The square root of 3877986361 is about 62273.4803989628. The cubic root of 3877986361 is about 1571.0937192161.

The spelling of 3877986361 in words is "three billion, eight hundred seventy-seven million, nine hundred eighty-six thousand, three hundred sixty-one".