3961539737 has 2 divisors, whose sum is σ = 3961539738. Its totient is φ = 3961539736.

The previous prime is 3961539731. The next prime is 3961539739. The reversal of 3961539737 is 7379351693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2185001536 + 1776538201 = 46744^2 + 42149^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3961539737 is a prime.

Together with 3961539739, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3961539731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1980769868 + 1980769869.

It is an arithmetic number, because the mean of its divisors is an integer number (1980769869).

Almost surely, 2^3961539737 is an apocalyptic number.

It is an amenable number.

3961539737 is a deficient number, since it is larger than the sum of its proper divisors (1).

3961539737 is an equidigital number, since it uses as much as digits as its factorization.

3961539737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3214890, while the sum is 53.

The square root of 3961539737 is about 62940.7637147819. The cubic root of 3961539737 is about 1582.2970030954.

The spelling of 3961539737 in words is "three billion, nine hundred sixty-one million, five hundred thirty-nine thousand, seven hundred thirty-seven".