1065663541 has 2 divisors, whose sum is σ = 1065663542. Its totient is φ = 1065663540.

The previous prime is 1065663517. The next prime is 1065663559. The reversal of 1065663541 is 1453665601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 927507025 + 138156516 = 30455^2 + 11754^2 .

It is a cyclic number.

It is not a de Polignac number, because 1065663541 - 2¹⁹ = 1065139253 is a prime.

It is a super-2 number, since 2×1065663541² = 2271277565233317362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065663541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1065663041) 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, 532831770 + 532831771.

It is an arithmetic number, because the mean of its divisors is an integer number (532831771).

Almost surely, 2^1065663541 is an apocalyptic number.

It is an amenable number.

1065663541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065663541 is an equidigital number, since it uses as much as digits as its factorization.

1065663541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1065663541 is about 32644.5024621298. The cubic root of 1065663541 is about 1021.4255157925.

The spelling of 1065663541 in words is "one billion, sixty-five million, six hundred sixty-three thousand, five hundred forty-one".