1065201961 has 2 divisors, whose sum is σ = 1065201962. Its totient is φ = 1065201960.

The previous prime is 1065201941. The next prime is 1065202007. The reversal of 1065201961 is 1691025601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 804573225 + 260628736 = 28365^2 + 16144^2 .

It is an emirp because it is prime and its reverse (1691025601) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1065201961 is a prime.

It is a super-2 number, since 2×1065201961² = 2269310435436491042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1065201901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532600980 + 532600981.

It is an arithmetic number, because the mean of its divisors is an integer number (532600981).

Almost surely, 2^1065201961 is an apocalyptic number.

It is an amenable number.

1065201961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065201961 is an equidigital number, since it uses as much as digits as its factorization.

1065201961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 1065201961 is about 32637.4318995843. The cubic root of 1065201961 is about 1021.2780215606.

The spelling of 1065201961 in words is "one billion, sixty-five million, two hundred one thousand, nine hundred sixty-one".