1309348705 has 16 divisors (see below), whose sum is σ = 1853604864. Its totient is φ = 868875840.

The previous prime is 1309348697. The next prime is 1309348727. The reversal of 1309348705 is 5078439031.

It is not a de Polignac number, because 1309348705 - 2³ = 1309348697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602302 + ... + 604471.

It is an arithmetic number, because the mean of its divisors is an integer number (115850304).

Almost surely, 2^1309348705 is an apocalyptic number.

It is an amenable number.

1309348705 is a deficient number, since it is larger than the sum of its proper divisors (544256159).

1309348705 is a wasteful number, since it uses less digits than its factorization.

1309348705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206816.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1309348705 is about 36184.9237252201. The cubic root of 1309348705 is about 1094.0028188139.

The spelling of 1309348705 in words is "one billion, three hundred nine million, three hundred forty-eight thousand, seven hundred five".