3930378061 has 2 divisors, whose sum is σ = 3930378062. Its totient is φ = 3930378060.

The previous prime is 3930378037. The next prime is 3930378079. The reversal of 3930378061 is 1608730393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3860136900 + 70241161 = 62130^2 + 8381^2 .

It is a cyclic number.

It is not a de Polignac number, because 3930378061 - 2¹⁷ = 3930246989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3930348061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1965189030 + 1965189031.

It is an arithmetic number, because the mean of its divisors is an integer number (1965189031).

Almost surely, 2^3930378061 is an apocalyptic number.

It is an amenable number.

3930378061 is a deficient number, since it is larger than the sum of its proper divisors (1).

3930378061 is an equidigital number, since it uses as much as digits as its factorization.

3930378061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 3930378061 is about 62692.7273373874. The cubic root of 3930378061 is about 1578.1372670960.

The spelling of 3930378061 in words is "three billion, nine hundred thirty million, three hundred seventy-eight thousand, sixty-one".