1309301643 has 18 divisors (see below), whose sum is σ = 1891529724. Its totient is φ = 805222704.

The previous prime is 1309301629. The next prime is 1309301659. The reversal of 1309301643 is 3461039031.

It is not a de Polignac number, because 1309301643 - 2¹² = 1309297547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1309301643.

It is not an unprimeable number, because it can be changed into a prime (1309303643) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 813946 + ... + 815552.

Almost surely, 2^1309301643 is an apocalyptic number.

1309301643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1309301643 is a deficient number, since it is larger than the sum of its proper divisors (582228081).

1309301643 is an frugal number, since it uses more digits than its factorization.

1309301643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3243 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 1309301643 is about 36184.2734209214. The cubic root of 1309301643 is about 1093.9897113870.

The spelling of 1309301643 in words is "one billion, three hundred nine million, three hundred one thousand, six hundred forty-three".