1309066473 has 32 divisors (see below), whose sum is σ = 2057328000. Its totient is φ = 729930240.

The previous prime is 1309066411. The next prime is 1309066477. The reversal of 1309066473 is 3746609031.

It is not a de Polignac number, because 1309066473 - 2¹⁰ = 1309065449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1309066477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129403 + ... + 139151.

It is an arithmetic number, because the mean of its divisors is an integer number (64291500).

Almost surely, 2^1309066473 is an apocalyptic number.

1309066473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1309066473 is a deficient number, since it is larger than the sum of its proper divisors (748261527).

1309066473 is a wasteful number, since it uses less digits than its factorization.

1309066473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10089.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 1309066473 is about 36181.0236588187. The cubic root of 1309066473 is about 1093.9242085375.

The spelling of 1309066473 in words is "one billion, three hundred nine million, sixty-six thousand, four hundred seventy-three".