1309061073 has 36 divisors (see below), whose sum is σ = 1862755440. Its totient is φ = 817677504.

The previous prime is 1309061027. The next prime is 1309061099. The reversal of 1309061073 is 3701609031.

1309061073 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1309061073 - 2⁹ = 1309060561 is a prime.

It is a super-2 number, since 2×1309061073² = 3427281785687822658, 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 1309061073.

It is not an unprimeable number, because it can be changed into a prime (1309060073) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3453798 + ... + 3454176.

Almost surely, 2^1309061073 is an apocalyptic number.

It is an amenable number.

1309061073 is a deficient number, since it is larger than the sum of its proper divisors (553694367).

1309061073 is an equidigital number, since it uses as much as digits as its factorization.

1309061073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 30.

The square root of 1309061073 is about 36180.9490339875. The cubic root of 1309061073 is about 1093.9227043615.

The spelling of 1309061073 in words is "one billion, three hundred nine million, sixty-one thousand, seventy-three".