1071665069 has 2 divisors, whose sum is σ = 1071665070. Its totient is φ = 1071665068.

The previous prime is 1071665053. The next prime is 1071665081. The reversal of 1071665069 is 9605661701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 587092900 + 484572169 = 24230^2 + 22013^2 .

It is an emirp because it is prime and its reverse (9605661701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1071665069 - 2⁴ = 1071665053 is a prime.

It is a super-2 number, since 2×1071665069² = 2296932040229549522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1071665029) 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, 535832534 + 535832535.

It is an arithmetic number, because the mean of its divisors is an integer number (535832535).

Almost surely, 2^1071665069 is an apocalyptic number.

It is an amenable number.

1071665069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071665069 is an equidigital number, since it uses as much as digits as its factorization.

1071665069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 1071665069 is about 32736.2958961456. The cubic root of 1071665069 is about 1023.3393912810.

The spelling of 1071665069 in words is "one billion, seventy-one million, six hundred sixty-five thousand, sixty-nine".