3956413081 has 2 divisors, whose sum is σ = 3956413082. Its totient is φ = 3956413080.

The previous prime is 3956413033. The next prime is 3956413117. The reversal of 3956413081 is 1803146593.

3956413081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3565164681 + 391248400 = 59709^2 + 19780^2 .

It is a cyclic number.

It is not a de Polignac number, because 3956413081 - 2⁹ = 3956412569 is a prime.

It is a super-2 number, since 2×3956413081² = 31306408935015825122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3956413381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1978206540 + 1978206541.

It is an arithmetic number, because the mean of its divisors is an integer number (1978206541).

Almost surely, 2^3956413081 is an apocalyptic number.

It is an amenable number.

3956413081 is a deficient number, since it is larger than the sum of its proper divisors (1).

3956413081 is an equidigital number, since it uses as much as digits as its factorization.

3956413081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 3956413081 is about 62900.0244912512. The cubic root of 3956413081 is about 1581.6141546156.

The spelling of 3956413081 in words is "three billion, nine hundred fifty-six million, four hundred thirteen thousand, eighty-one".