1065746309 has 4 divisors (see below), whose sum is σ = 1121838240. Its totient is φ = 1009654380.

The previous prime is 1065746299. The next prime is 1065746321. The reversal of 1065746309 is 9036475601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1065746309 - 2⁴ = 1065746293 is a prime.

It is a super-2 number, since 2×1065746309² = 2271630390294246962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065746359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28045937 + ... + 28045974.

It is an arithmetic number, because the mean of its divisors is an integer number (280459560).

Almost surely, 2^1065746309 is an apocalyptic number.

1065746309 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1065746309 is a deficient number, since it is larger than the sum of its proper divisors (56091931).

1065746309 is an equidigital number, since it uses as much as digits as its factorization.

1065746309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56091930.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 1065746309 is about 32645.7701547995. The cubic root of 1065746309 is about 1021.4519591477.

The spelling of 1065746309 in words is "one billion, sixty-five million, seven hundred forty-six thousand, three hundred nine".