3975858085769 has 2 divisors, whose sum is σ = 3975858085770. Its totient is φ = 3975858085768.

The previous prime is 3975858085757. The next prime is 3975858085777. The reversal of 3975858085769 is 9675808585793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2804831106169 + 1171026979600 = 1674763^2 + 1082140^2 .

It is a cyclic number.

It is not a de Polignac number, because 3975858085769 - 2⁸ = 3975858085513 is a prime.

It is a super-2 number, since 2×3975858085769² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3975858085693 and 3975858085702.

It is not a weakly prime, because it can be changed into another prime (3975858085789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1987929042884 + 1987929042885.

It is an arithmetic number, because the mean of its divisors is an integer number (1987929042885).

Almost surely, 2^{3975858085769} is an apocalyptic number.

It is an amenable number.

3975858085769 is a deficient number, since it is larger than the sum of its proper divisors (1).

3975858085769 is an equidigital number, since it uses as much as digits as its factorization.

3975858085769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288000, while the sum is 80.

The spelling of 3975858085769 in words is "three trillion, nine hundred seventy-five billion, eight hundred fifty-eight million, eighty-five thousand, seven hundred sixty-nine".