1966601141 has 2 divisors, whose sum is σ = 1966601142. Its totient is φ = 1966601140.

The previous prime is 1966601101. The next prime is 1966601167. The reversal of 1966601141 is 1411066691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1736472241 + 230128900 = 41671^2 + 15170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1966601141 - 2¹⁴ = 1966584757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1966601101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983300570 + 983300571.

It is an arithmetic number, because the mean of its divisors is an integer number (983300571).

Almost surely, 2^1966601141 is an apocalyptic number.

It is an amenable number.

1966601141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966601141 is an equidigital number, since it uses as much as digits as its factorization.

1966601141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1966601141 is about 44346.3768644069. The cubic root of 1966601141 is about 1252.8683232232.

The spelling of 1966601141 in words is "one billion, nine hundred sixty-six million, six hundred one thousand, one hundred forty-one".