3975161609 has 2 divisors, whose sum is σ = 3975161610. Its totient is φ = 3975161608.

The previous prime is 3975161581. The next prime is 3975161647. The reversal of 3975161609 is 9061615793.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2039425600 + 1935736009 = 45160^2 + 43997^2 .

It is a cyclic number.

It is not a de Polignac number, because 3975161609 - 2⁸ = 3975161353 is a prime.

It is not a weakly prime, because it can be changed into another prime (3975161699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987580804 + 1987580805.

It is an arithmetic number, because the mean of its divisors is an integer number (1987580805).

Almost surely, 2^3975161609 is an apocalyptic number.

It is an amenable number.

3975161609 is a deficient number, since it is larger than the sum of its proper divisors (1).

3975161609 is an equidigital number, since it uses as much as digits as its factorization.

3975161609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 3975161609 is about 63048.8826943032. The cubic root of 3975161609 is about 1584.1085201016.

The spelling of 3975161609 in words is "three billion, nine hundred seventy-five million, one hundred sixty-one thousand, six hundred nine".